Survival or extinction : proceedings of a conference held at the Royal Botanic Gardens, Kew, entitled The Practical Role of Botanic Gardens in the Conservation of Rare Plants and Threatened Plants, 11-17 September 1978 / edited by Hugh Synge and Harry Townsend.
Survival or extinction : proceedings of a conference held at the Royal Botanic Gardens, Kew, entitled The Practical Role of Botanic Gardens in the Conservation of Rare Plants and Threatened Plants, 11-17 September 1978 / edited by Hugh Synge and Harry Townsend.