共 8 条
[1]
BERRY M, 1952, REV NOTATION SYSTEMS
[2]
BUHLE EL, 1946, J CHEM EDUC, V23, P375
[3]
ELIAS AW, J CHEM DOC
[4]
GEER HA, COMMUNICATION
[5]
GEER HA, 1960, SEP S INF RETR AN AM
[6]
HOOD SL, 1953, EDGE PUNCHED CARDS S
[7]
INDEXING OF METAL AND THERMIT CORPORATION RESEARCH RECORDS ON KEYSORT CARDS
[J].
AMERICAN DOCUMENTATION,
1960, 11 (03)
:222-228
[8]
Wiselogle F. Y., 1946, SURVEY ANTIMALARIAL