Reference Library: ri: category - o. Environmental Aspects
Orangutans and the Economics of Sustainable Forest Management in Sumatra
September, 2011. Serge Wich, Riswan, Johann Jenson, Johannes Refisch and Christian Nellemann (eds.). UNEP/ GRASP/ PanEco/ YEL/ ICRAF/ GRID-Arendal. 83 pages. ISBN: 978-82-7701-095-3
