TY  - BOOK
TI  - _Introduction to Agroecology Principles and Practices / Paul A. Wojtkowski 
SN  - 1560223170
AV  - S 589.7 .W647 2006  
CY  - New York : Food Product , 2006 
KW  - _Agroecology
N1  - Includes index
ER  -