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1 Lal, R, "World crop residues production and implications of this use as a biofuel" 31 : 575-584, 2005
2 Clay, J, "World agriculture and the environment,In a commodity by commodity guide to impacts and practices" Island Press 2004
3 Moldan, D, "Water for food, water for life" Earthscan 645-, 2007
4 "United Nations Population Fund (UNFPA)"
5 Reganold, J.P, "Transforming U.S. Agriculture" 332 : 670-671, 2011
6 Cohen, J.E, "The human population,In next half century" 320 : 1172-1175, 2003
7 Greenwood, D.J, "The 1988 Shell Lecture,In Plant nutrition and human welfare,In The World Scene" 48 : 387-410, 1989
8 Lal,R, "Ten tenets of sustainable soil management" 64 : 20-21, 2009
9 Lal, R, "Soils and Sustainable Agriculture,In A Review" 28 : 57-64, 2008
10 DeJong, J.T., "Soil engineering in vivo,In harnessing natural biogeochemical systems for sustainable, multi functional engineering solutions" 8 : 1-15, 2011
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