Studies on fossil plants

gan Alvin, K L, Barnard, P D W, Chaloner, W G
Cyhoeddwyd 1968

Agricultural pests of India, and of eastern and southern Asia, vegetable and animal injurious to man and his products

gan Balfour,Edward
Cyhoeddwyd 1997

Ancient plants : being a simple account of the past vegetation of the earth and of the recent important discoveries made in the realm of nature study

gan Stopes,Marie C