Established heading records for topical terms typically include several 4XX and 5XX fields. The tracing fields are justified by numerous 670 fields. Sources in which no information was found are recorded in a single 675 field, each identified by subfield $a. The 675 field is not repeatable.
In this record, 008/06 is coded i to indicate that the heading can be geographically
subdivided by the indirect method. The descriptive cataloging rules code in
008/10 is n, because this character position is not applicable to the formulation
of topical term headings.
| LDR | *****nz###22*****n##4500 | |||||||||
| 001 | <control number> | |||||||||
| 003 | <control number identifier> | |||||||||
| 005 | 19860808072450.5 | |||||||||
| 008 |
|
|||||||||
| 010 | ## | $aex#86004405# | ||||||||
| 040 | ## | $a<organization code>$c<organization code> | ||||||||
| 150 | ## | $aOptical disks | ||||||||
| 450 | ## | $aDiscs, Optical | ||||||||
| 450 | ## | $aDisks, Optical | ||||||||
| 450 | ## | $aOptical discs | ||||||||
| 450 | ## | $aLaser discs | ||||||||
| 450 | ## | $aLaser disks | ||||||||
| 450 | ## | $aLaserdiscs | ||||||||
| 450 | ## | $aLaserdisks | ||||||||
| 550 | ## | $wg$aOptical storage devices | ||||||||
| 670 | ## | $aWork cat.: McQueen, J. Videodisc and optical digital disk technologies and their applications in libraries, 1986. | ||||||||
| 670 | ## | $aWeb. 3$b(disk or disc) | ||||||||
| 670 | ## | $aLibrary Literature$b(Laser discs x Optical discs) | ||||||||
| 670 | ## | $aMcGraw-Hill dict. sci. tech.$b(optical disk - a type of video disk storage device consisting of a pressed disk with a spiral groove at the bottom of which are submicrometer-sized depressions that are sensed by a laser beam.) | ||||||||
| 670 | ## | $aLCIB thes.$b(Optical disks, see Optical storage devices) | ||||||||
| 670 | ## | $aPrice, J. "The optical disk pilot program at the Library of Congress." Videodisc and optical disk: v. 4, Nov.-Dec. 1984: p. 424-432. | ||||||||
| 670 | ## | $aO'Neill, S. "Optical disk technology." LC science tracer bullet TB 84-6. | ||||||||
| 670 | ## | $aBPI$b(Optical disks, see Optical storage devices) | ||||||||
| 670 | ## | $aRandom House$b(Optical disk; Optical disc; also called Laser disk) | ||||||||
| 670 | ## | $aHennepin$b(Optical discs x Laser discs) | ||||||||
| 675 | ## | $aNCC thes. comput. terms;$aNASA;$aIAD;$aNCC thes. comput. terms;$aBDNE2 |
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