|
1. |
|
Managing for Healthy Ecosystems
David J Rapport, Bill L Lasley, Dennis E Rolston, N Ole Nielsen, Calvin O Qualset
E-bok. CRC Press, USA, 2002.
|
|
2. |
|
Biodiversity in Agroecosystems
Wanda W Collins, Calvin O Qualset
Inbunden. Lewis Publishers,U.S., USA, 1998.
|
|
3. |
|
Managing for Healthy Ecosystems
David J Rapport, Bill L Lasley, Dennis E Rolston, N Ole Nielsen, Calvin O Qualset
Inbunden. CRC Press Inc, USA, 2002.
|
|
|
|