Arroyo, M. d. M. D. (2002). Sewage sludge compost fertilizer effect on maize yield and soil heavy metal concentration. Universidad Nacional Autónoma de México.
Chicago Style (17th ed.) CitationArroyo, Ma. del Mar Delgado. Sewage Sludge Compost Fertilizer Effect on Maize Yield and Soil Heavy Metal Concentration. Universidad Nacional Autónoma de México, 2002.
MLA (9th ed.) CitationArroyo, Ma. del Mar Delgado. Sewage Sludge Compost Fertilizer Effect on Maize Yield and Soil Heavy Metal Concentration. Universidad Nacional Autónoma de México, 2002.
Warning: These citations may not always be 100% accurate.