TY  - BOOK
AU  - 
AU  - Ritter, Robert John,;Coombs, Richard F.,;Drysdale, R. Bruce,;Gardner, Grant A.,;Lunn, Dave T.,
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 0-17-603860-4 (hardback)
SN  - 2
PY  - 1993///46
CY  - Ontario
PB  - Nelson Canada
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Biology
KW  - sears0
N1  - Includes index; 5
ER  -