Pages 261-275 in S. K. Jacobson, editor. Patent, D. M. 1996. Children save the rain forest. Rachowiecki, R. 1994. Costa Rica, a travel survival kit.
Unique debt swap to protect forest.
Robinson, B. 1988. The Costa Rican connection. Robinson, D. 1988. In the clouds of Costa Rica. Pages 98-113 in M. Sedeen, editor.