The status of human beings in nature by Del Rosario, Jaime D.G. 1967-

The Environmental crisis

Our changing earth by Canby, Thomas Y.

The global environment science, technology and management

Available for UP System via Wiley Online Library

Ecology and environment by Bhargava, R.N. (Ravindra Nath), Olson, Keith, Tiede, Lynn, Rajaram, V

Global imperative harmonizing culture and nature by Maser, Chris

People and nature an introduction to human ecological relations by Moran, Emilio F.

Tourism, recreation and biological invasions