Code 130 - Coded Data Field: Microforms
- physical attributes (R)
Indicators: blank
Subfield codes
$a Microform Coded Data Physical Attributes
$a/0 Specific Material Designation
a = aperture card
b = microform cartridge
c = microfilm cassette
d = microfilm reel
e = microfiche
f = microfiche cassette
g = micro opaque
h = microfilm slip
z = Other
$a/1 Polarity
a = positive
b = negative
d = mixed polarity
u = unknown
$a/2 Dimensions
a = 8 mm (microfilm)
d = 16 mm (microfilm)
f = 35 mm (microfilm)
g = 70 mm (microfilm)
h = 105 mm (microfilm)
1 = 3x5 in. (8x13 cm) (microfiche or micro opaque)
m = 4x6 in. (llx15 cm) (microfiche or micro opaque)
o = 6x9 in. (16x23 cm) (microfiche or micro opaque)
p = 3 1/4 x 7 3/8 in. (9xl9 cm) (aperture card)
u = unknown
z = other
$a/3 Reduction ratio
a = low reduction
b = normal (16x 30x)
c = high (31x 60x)
d = very high (61x 90x)
e = ultrahigh (9lx )
u = unknown
v = varies
$a/4-6 Specific reduction ratio
If a value is given, right justify with zero fill. If a single digit is
missing sing, replace by 'u'. If the ratio is unknown, fill with blanks.
$a/7 Colour
a = monochrome
b = colour
u = unknown
v = varies
$a/8 Emulsion on film
a = silver halide
b = diazo
c = vesicular
u = unknown
v = mixed emulsion
x = not applicable
z = other
$a/9 Generation
a = first generation (Master)
b = printing master
c = service copy
u = unknown
v = mixed generations
$a/10 Base of film
a = safety base
b = not a safety base (e.g. nitrate)
u = unknown
x = not applicable