TY  - BOOK
AU  - 
AU  - Purves, William K.
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 0716798565 (hardcover)
SN  - 2
PY  - 2004///];copyright 200446
CY  - Sunderland, Mass. :;Gordonsville, VA
PB  - Sinauer Associates ;;W.H. Freeman and Co.
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Biology
N1  - 5
ER  -