00501nam a2200145Ia 4500 0000016083 20251012174743.0 2001 ne c 9090721119 Secretariat of the convention on Biological Diversity (2001)Series No4 The value of forest ecosystems Montreal, Canada Secretariat of the convention on Biological Diversity 2001 v, 60 p. 28 cm. Ecosystems Forest and forestry 10031 10031