APA

Wolf H., . (1993). Seed procurement and legal regulations for forest reproductive material in tropical and subtropical countries : proceedings of an international symposium. Nairobi: GTZ.

Chicago

Wolf H, . 1993. Seed procurement and legal regulations for forest reproductive material in tropical and subtropical countries : proceedings of an international symposium. Nairobi: GTZ.

Harvard

Wolf H., . (1993). Seed procurement and legal regulations for forest reproductive material in tropical and subtropical countries : proceedings of an international symposium. Nairobi: GTZ.

MLA

Wolf H, . Seed procurement and legal regulations for forest reproductive material in tropical and subtropical countries : proceedings of an international symposium. Nairobi: GTZ. 1993.