TY  - BOOK
TI  - McGraw-Hill encyclopedia of science and technology
U1  - 503 
PY  - 1977///
CY  - New York
PB  - McGraw-Hill
KW  - Ciencia
KW  - Diccionarios
KW  - Tecnología
N1  - v.16 Yearbook, 1978
ER  -