@book{179095,
	author = {Choudhury, S K Hajra Choudhury, A K Hajra Roy, Nirjhar},
	title = {Elements of workshop technology V.1: Manufacturing processes, revised and enlarged, SI and MKS units},
	publisher = {Media Promoters},
	year = {2003},
	address = {Mumbai},
	edition = {13th ed.}
}