TY  - BOOK
AU  - Yelles,Marvin
TI  - McGraw-Hill encyclopedia of science and technology;volume 2: an international reference work in fifteen volumes including an index
SN  - 0070797986
AV  - Q121 .M3 1971
U1  - 503.21 MCG 20
PY  - 1971///]
CY  - New York
PB  - McGraw-Hill
KW  - science
KW  - Science
KW  - Encyclopedias
KW  - Technology
N1  - Includes bibliographies
ER  -