References
- Vallentyne , J. R. and Beeton , A. M. 1988 . The “ecosystem” approach to managing human uses and abuses of natural resources in the Great Lakes Basin . Environ. Conserv. , 15 ( 1 ) : 58 – 62 .
- Vallentyne , J. R. and Munawar , M. 1993 . From aquatic science to ecosystem health: a philosophical perspective . Journal of Aquatic Ecosystem Health , 2 ( 4 ) : 231 – 236 .