@book{4311,
	author = {Punmia, B. C. and Jain, Ashok Kumar.},
	title = {Surveying :},
	publisher = {Laxmi publications (p) ltd.,},
	year = {c1990 [Reprinted 1999].},
	address = {New Delhi :},
	edition = {9th rev. & enl. ed.}
}