1. 01. English Non Fiction Biological conservation by Ehrenfeld, David W. Publication: New York, Holt, Rinehart and Winston 1970 . xi, 226 p. , Published in 1972 under title: Conserving life on earth. 24 cm. Date:1970 Availability: Copies available: (3), Actions:
2. 05. French Non Fiction 5000 JOURS POUR SAUVER LA PLANERE. by GOLDSMITH, EDWARD Publication: CHENE 1990 Date:1990 Availability: Copies available: (1), Actions: