Home › Authors › Wentworth B. Clapham 👤 Wentworth B. Clapham b. 1942 ยท 3 books Books by Wentworth B. Clapham Human ecosystems 1981 Natural ecosystems 1973 Distribution of pollen and spo Distribution of pollen and spores in the upper flowerpot formation (Permian) of Oklahoma 1968
