300 Subfield $c - Dimensions:
Subfield $c contains the dimensions of an item, usually in centimeters, millimeters, or inches. The dimensions may be followed by a parenthetical qualifier giving the format of the item (e.g., (fol.), (8 vo)). The format qualifier is recorded as part of subfield $c and is not separately subfield coded.
In records formulated according to ISBD principles, subfield $c contains all data following a semicolon ( ; ) and up to and including the next mark of ISBD punctuation, if any [e.g., a plus sign ( + )].
Examples:
300 ## $a149 p. ;$c23 cm.
300 ## $a271 p. :$bill. ;$c10 x 27 cm.
300 ## $a1 map :$bcol. ;$c200 x 350 cm., folded to 20 x 15 cm., in plastic case 25 x 20 cm.
300 ## $3poems$a1$fpage ;$c108 cm. x 34.5 cm.
300 ## $a1 sound cassette (85 min.) :$b3 3/4 ips, mono. ;$c7 1/4 x 3 1/2 in., 1/4 in. tape.
300 ## $a1 computer disk ;$c3 1/2 in.
300 ## $a14 film reels (157 min.) :$bPanavision ;$c16 mm.
300 ## $a1 print :$blithograph, b&w ;$cimage 33 x 41 cm., on sheet 46 x 57 cm.
300 ## $a40 p. :$bill. (woodcuts) ;$c20 cm. (8vo)
For music, subfield $c is repeated when dimensions are associated with a repeated subfield $a.
When dimensions are given as part of the description of accompanying material, subfield $c is not repeated.
Example:
300 ## $a271 p. :$bill. ;$c21 cm. +$eatlas (37 p., 19 leaves of plates : 19 col. maps ; 37 cm.)
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