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Books about Holttum:
Gardening in the Tropics: The Definitive Guide for Gardeners. R.E. Holttum and Ivan Enoch by R. E. Holttum (Apr 1, 2011)
Holttum Memorial Volume by R J Johns (Jan 15, 1997)
Pteridology in Perspective: Pterdophyta Symposium '95 Proceedings of the Holttum Memorial Pteridophyte Symphosium... by J H Camus, M Gibby and R J Johns (Jan 15, 2000)
The orchids of peninsular Malaysia and Singapore: A revision of R. E. Holttum: Orchids of Malaya by Gunnar Seidenfaden (1992)
Grasses of Malaya, (Holttum, Richard Eric, 1895- A revised Flora of Malaya, v. 3) by H. B Gilliland (1971)
Taras Bulba With Introduction, Notes and Vocabulary by V. E. J. Holttum by N. V. Gogol (1971)
Wiki information Holttum:
Richard Eric Holttum was an English botanist and author.
Nikolas Holttum is a film producer.