H. G. Wells
United States. Agricultural Research Service
R. Mead
William Saunders
Thomas Morton Little
Clive R. Ireland
Young, Arthur
Hall, Daniel Sir
A. Reza Hoshmand
Johnstone, Peter, Peter
Pam Robson
Easter School in Agricultural Science (4th 1957 University of Nottingham)
Alfred Charles True
G. V. Dyke
Thomas Shaw
Arnold Nicholson
G. Stuart Pettygrove
William Fream