TY  - BOOK
AU  - Parker, Sybil P., ed.
TI  - Mc Graw-Hill year book of science and technology 1990 : comprehensive coverage of recent events and research as compiled by the staff of the Mc-Graw Hill encyclopedia of science and technology
SN  - 9780070454910
PY  - 1990///
CY  - New York
PB  - McGraw-Hill Book
ER  -