@ARTICLE {1973, title = {Effects of seed bed preparation and time of planting on maize (Zea mays L.) in Western Nigeria}, author = {Lal, R. }, journal = {Experimental Agriculture}, year = {1973}, volume = {9}, number = {4}, pages = {303--313}, issn = {1469-4441}, url = {http://journals.cambridge.org/article_S0014479700010097}, doi = {10.1017/s0014479700010097}, }