TY  - SER
AU  - Stille,Darlene R.
TI  - Science year: the world book annual science supplement 
SN  - 0080-7621
PY  - 1991///]-
CY  - Chichago, London, Sydney, Toronto
PB  - World Book
KW  - Science
KW  - Year books
KW  - English encyclopedias and dictionaries - United States
ER  -