@book{25395,
	author = {Thavaprakaash, N. and Velayudham, K},
	title = {Objective Agronomy: for aspirants of ICAR and civil service examination/by N.Thavaprakaash and K. Velayudham.},
	publisher = {Kalyani Publishers, },
	year = {2007.},
	address = { Ludhiana: }
}