TY  - BOOK
ED  - World Book Inc. 
TI  - 1992 Science year: the World book annual science supplement; a review of science and technology during the 1991 school year 
SN  - 0716605929
U1  - 420.81 22
PY  - 1991///
CY  - Chicago
PB  - World Book
KW  - Science -- History
ER  -