TY  - GEN
AU  - McGraw-Hill encyclopedia of science and technology
TI  - McGraw-Hill yearbook of science and technology. 1990-. 
AV  - Q9 Mac.
PY  - 1990///-
PB  - McGraw-Hill
KW  - Science - Yearbooks
KW  - Technology - Yearbooks
N1  - 7926
ER  -