Browsing OU - Dissertations by Author "Ilo, Raphael Esione,"
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Land application of sewage sludge in agricultural land in Nigeria with special reference to Enugu.
Ilo, Raphael Esione, (1982)Comparison of the costs of producing some Nigerian agricultural crops by using sewage sludge and commercial fertilizer showed that sewage sludge is 14 and 33 times less expensive than commercial fertilizer using sludge ...