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| Heading | Position in Field | Length | Codes | Physical Description Fixed Field (007) (Repeatable) Valid When 007 TYP = h Headings and codes used in 007 fixed field data element depend on the GMD value. |
| 007 GMD | 0 | 1 | CATEGORY OF MATERIAL (General Material Designation) | |
| *h | Microform Other valid GMD values in the Holdings format are: a (map) d (globe) g (projected graphic) k (nonprojected graphic) m (motion picture) s (sound recording) v (videorecording) Headings and codes used with each of these GMDs are listed in separate sets of pages in this tag chart. |
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Heading
Position in Field
Length
Codes
Physical Description Fixed Field (007) (Repeatable)
Valid When 007 TYP = h
Headings and codes used in 007 fixed field data element depend on the GMD value.
SMD
1
1
SPECIFIC MATERIAL DESIGNATION
a
Aperture card
b
Microfilm cartridge
c
Microfilm cassette
d
Microfilm reel
e
Microfiche
f
Microfiche cassette
g
Microopaque
z
Other microform type
*?
Data not yet supplied (fill character)
Heading
Position in Field
Length
Codes
Physical Description Fixed Field (007) (Repeatable)
Valid When 007 TYP = h
Headings and codes used in 007 fixed field data element depend on the GMD value.
O/R
2
1
ORIGINAL VERSUS REPRODUCTION ASPECT
f
Facsimile
o
Original
r
Reproduction
u
Unknown
*?
Data not yet supplied (fill character)
Note: Use of values other than "?" is not recommended
(see USMARC Format for Bibliographic Data.)
Heading
Position in Field
Length
Codes
Physical Description Fixed Field (007) (Repeatable)
Valid When 007 TYP = h
Headings and codes used in 007 fixed field data element depend on the GMD value.
POLAR
7
1
POSITIVE/NEGATIVE ASPECT
a
Positive
b
Negative
m
Mixed polarity
u
Unknown
*?
Data not yet supplied (fill character)
Heading
Position in Field
Length
Codes
Physical Description Fixed Field (007) (Repeatable)
Valid When 007 TYP = h
Headings and codes used in 007 fixed field data element depend on the GMD value.
DIM
4
1
DIMENSIONS
a
Microfilm - 8 mm
d
Microfilm - 16 mm
f
Microfilm - 35 mm
g
Microfilm - 70 mm
h
Microfilm - 105 mm
l
Microfiche or microopaque - 3 x 5 inches or 8 x 13 cm
m
Microfiche or microopaque - 4 x 6 inches or 11 x 15 cm
o
Microfiche or microopaque - 6 x 9 inches or 16 x 23 cm
p
Aperture card - 3 1/4 x 7 3/8 inches or 9 x 19 cm
u
Unknown
z
Other dimensions
*?
Data not yet supplied (fill character)
Heading
Position in Field
Length
Codes
Physical Description Fixed Field (007) (Repeatable)
Valid When 007 TYP = h
Headings and codes used in 007 fixed field data element depend on the GMD value.
REDUC
5
1
REDUCTION RATIO RANGE
a
Low reduction (Less than 16:1)
b
Normal reduction (Between 16:1 and 30:1)
c
High reduction (Between 31:1 and 60:1)
d
Very high reduction (Between 61:1 and 90:1)
e
Ultra high reduction (Over 90:1)
v
Reduction rate varies
u
Unknown
*?
Data not yet supplied (fill character)
6
3
Note: The reduction ratio code is followed by a space and three bytes which contain either three fill characters or the numeric value of the specific reduction ratio using three digits right justified with leading zeros.
LC uses the fill character when the ratio is not specified, using hyphen (-) only for unknown digits. If code "e" is used in REDUC, the specified ratio must be recorded.
*???
Heading
Position in Field
Length
Codes
Physical Description Fixed Field (007) (Repeatable)
Valid When 007 TYP = h
Headings and codes used in 007 fixed field data element depend on the GMD value.
COLOR
9
1
COLOR (MICROFORMS)
b
Black-and-white
c
Multicolored
m
Mixed
u
Unknown
z
Other
*?
Data not yet supplied (fill character)
Heading
Position in Field
Length
Codes
Physical Description Fixed Field (007) (Repeatable)
Valid When 007 TYP = h
Headings and codes used in 007 fixed field data element depend on the GMD value.
EMUL
10
1
EMULSION ON FILM
a
Silver halide
b
Diazo
c
Vesicular
m
Mixed emulsion
n
Not applicable (item does not have emulsion on film)
u
Unknown
z
Other emulsion on film
*?
Data not yet supplied (fill character)
Heading
Position in Field
Length
Codes
Physical Description Fixed Field (007) (Repeatable)
Valid When 007 TYP = h
Headings and codes used in 007 fixed field data element depend on the GMD value.
GENER
11
1
GENERATION
a
First generation (master)
b
Printing master
c
Service copy
m
Mixed generation
u
Unknown
*?
Data not yet supplied (fill character)
Heading
Position in Field
Length
Codes
Physical Description Fixed Field (007) (Repeatable)
Valid When 007 TYP = h
Headings and codes used in 007 fixed field data element depend on the GMD value.
BASE
12
1
BASE OF FILM
a
Safety base, undetermined
b
Not a safety base (OBSOLETE)
c
Safety base, acetate undetermined
d
Safety base, diacetate
i
Nitrate base
m
Mixed base (nitrate and safety)
n
Not applicable
p
Safety base, polyester
r
Safety base, mixed
t
Safety base, triacetate
u
Unknown
z
Other film base
*?
Data not yet supplied (fill character)
7/22/96 taf