TY  - BOOK
AU  - Orians, Gordon H.
AU  - Heller, H. Craig
AU  - Mallon, Elizabeth J.
TI  - Instructor's manual to accompany Purves and Orians Life: the sci ence of biology 
SN  - 087893734X
U1  - 570 
PY  - 1987///
CY  - Sunderland, Mass.
PB  - Sinauer Associates
KW  - Biology
ER  -