@book{29020,
	author = {Singh, Uday Narayan.},
	title = {Basic Principles of Agronomy = Shasya Vigyan ke Molik Siddhant / },
	publisher = {: Pustak Prakashan},
	year = {, 1991},
	address = {.- Varanasi},
	edition = {1st ed.}
}