@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},
}