1. Growth and yield response of fluted pumpkin to mulching in semi-arid regions;Adetunji;J. Arid Agric.,1989
2. Production of onions;Agricultural Extension Research and Liaison Services (AERLS);Institute of Agricultural Research, Ahmadu Bello University, Zaria. Extension Guide No. 2,1985
3. Biological Control of Plant Pathogens;Baker,1974
4. As quoted by Allison, F.E., 1973;Bollen,1959
5. Automated separation and conductimetric determination of ammonia and dissolved carbon dioxide;Carlson;Anal. Chem.,1978