1. Agricultural research;Hedley,1972
2. A review of 50 years applied entomology in Nigeria: Tree crops;Gerard,1967
3. The aim and objects of the Agricultural Department in Nigeria;Faulkner,1922
4. The oil palm and its varieties;Farquhar,1913
5. Some comments on the history of agricultural research in Nigeria;Vine;Nigerian Agric. J,1964