Extinction is forever : threatened and endangered species of plants in the Americas and their significance in ecosystems today and in the future : proceedings of a symposium held at the New York Botanical Garden, May 11-13, 1976, in commemoration of the Bicentennial of the United States of America / edited by Ghillean T. Prance and Thomas S. Elias.
Extinction is forever : threatened and endangered species of plants in the Americas and their significance in ecosystems today and in the future : proceedings of a symposium held at the New York Botanical Garden, May 11-13, 1976, in commemoration of the Bicentennial of the United States of America / edited by Ghillean T. Prance and Thomas S. Elias.