TY  - BOOK
AU  - McGraw-Hill
TI  - McGraw-Hill encyclopedia of science and technology vol. 4 - dac-ens
U1  - 503 
PY  - 1977///
CY  - New York
PB  - McGraw-Hill book co.
KW  - Science -- Encyclopedias
KW  - Encyclopedias and dictionaries
KW  - Science
ER  -