Polhill, Diana books & textbook
East African Plant Collectors by Diana Polhill (2015-10-01)
Kew Publishing (2015-10-01) / Paperback
Flora of Tropical East Africa: Index of Collecting Localities
Royal Botanic Gardens, Kew /1988-01-01 Paperback / 398 Pages
isbn-10: 0947643095 / isbn-13: 9780947643096
