Ecological principles of agriculture /
Powers, Laura E.
Ecological principles of agriculture / Laura E. Powers and Robert McSorley - New York : Delmar, c2000. - xi, 433 p. : ill. ; 24 cm.
0766806537
Agricultural ecology
S589.7 / .P68 2000
630.277 / P888e
Ecological principles of agriculture / Laura E. Powers and Robert McSorley - New York : Delmar, c2000. - xi, 433 p. : ill. ; 24 cm.
0766806537
Agricultural ecology
S589.7 / .P68 2000
630.277 / P888e