@book{93696,
	author = {Walker, John, and Awange, Joseph L.,},
	title = {Surveying for civil and mine engineers :},
	publisher = {Springer,},
	year = {2020},
	address = {Cham :},
	edition = {Second edition},
	url = {https://link-springer-com.libraryumpsa.idm.oclc.org/book/10.1007/978-3-030-45803-4}
}