Graduate programs in the biological sciences. 2001. Tome 3 

. - 35e éd. 
. - [Washington]  : Peterson's, Thomson's learning, 2001
. - 2189 p.  : ill., couv. ill. en coul.  ; 29 cm. 
<br/><br/><label>ISBN: </label>1088-9434  ; ISBN 0-7689-0373-4 
<br/><br/><label>Universal Decimal Class. No.: </label>500.058