MARC 21 Authority Format

Full Level Record
Subdivision Record

Network Development and MARC Standards Office
Library of Congress


The 1XX heading in this type record is an unestablished heading that is authorized for use as a subject subdivision with established headings. Information about the subdivision term and/or established headings with which it is used may be contained in general note fields 667 and/or 680. Subdivision records may contain 670 and 675 fields to justify the heading and usage.

LDR   *****nz###22*****n##4500
001   <control number>
003   <control number identifier>
005   19920520103200.0
008  
731227 #n#dn cnnbb ba### ##### ###a# ann## ###u
010 ## $aex#87000001#
040 ## $a<organization code>$c<organization code>
073 ## $aA2$aA3$aA4$aA5$aA6$aA7$aA8$aA9$aA10$aA11$aA12$aA13$aA14$aA15$aA16
$aB1$aB3$aB4$aB5$aB6$aD8$aD12$aG4$aG5$aG6$aG7$aG8$aG9$aG10$aG11
$aG12$zmesh
180 ## $xdrug effects
480 ## $xDE
667 ## $asubheading only; for effect of exogenously administered drugs & chemicals; includes their mechanism of action; see MeSH scope note in Introduction; indexing policy: Manual 19.8.24; DF: /drug eff or /DE
680 ## $iUsed with organs, regions, tissues, or organisms and physiological and psychological processes for the effects of drugs and chemicals.
688 ## $a66; used with Category A, B & G 1966; A, B, F & G 1967-74; A, B, F1-2 & G4-11 1975-81; A, B1, B3-6, F1-2 & G4-11 1982; A, B1, B3-6, F1-2 & G4-12 1983-86; A, B1, B3-6, F1-2, G4-12, BLOOD PROTEINS+, DNA+ & RNA+ 1987-88; A, B1, B3-6, F1-2, G4-12, BLOOD PROTEINS+ & NUCLEIC ACIDS+ 1989; A2-16, B1, B3-6, D12 & G4-12 1990 forward


Go to:


Library of
Congress Library of Congress
Library of Congress Help Desk (05/31/2002)