@book{21935,
	author = {Singh, Sanjeev Kumar.},
	title = {Environmental Sciences : UGC - NET/ SLET National Educational Test for Junior research Fellowship and Eligibility for Lecturership, strictly according to the revised syllabus, question bank of objective type questions, condensed study material / },
	publisher = {: Cosmos Bookhive},
	year = {, Nd.},
	address = {.- Gurgaon}
}