Ecological principles of agriculture /
Powers, Laura E.
Ecological principles of agriculture / Laura E. Powers, Robert McSorley - Albany, NY : Delmar Thomson Learning, 2000 - xi, 433 p. : ill. ; 24 cm.
Includes bibliographical references
0766806537 RM321.40
Agricultural ecology
Ecological principles of agriculture / Laura E. Powers, Robert McSorley - Albany, NY : Delmar Thomson Learning, 2000 - xi, 433 p. : ill. ; 24 cm.
Includes bibliographical references
0766806537 RM321.40
Agricultural ecology
