@book{25801,
	author = {Lutgens, Frederick  and Tarbuck, Edward  },
	title = {Essentials of geology},
	publisher = {Pearson},
	year = {2014},
	edition = {12th ed.},
	url = {https://ebookcentral.proquest.com/lib/curaj/detail.action?docID=5186117}
}