By Simpson R.D.   in Innovative Higher Education

ISSN:0742-5627|27|1|3-4

Springer Publishing Company ‎(2002)‎

Access to resources Favorite 16.436365

By Simpson R.D.   Bradford III R.L.   in Journal of Environmental Economics and Management

ISSN:0095-0696|30|3|282-300

Academic Press‎(1996)‎

Access to resources Favorite 11.694701