@book{544907,
	author = {Higdon, Archie, and Stiles, William Barnard,},
	title = {Engineering mechanics},
	publisher = {Prentice-Hall,},
	year = {1949.},
	series = {Prentice-Hall civil engineering and engineering mechanics series},
	address = {New York,},
	url = {http://catalog.hathitrust.org/api/volumes/oclc/1657598.html}
}