@book{18950,
	author = {Baxter, Charles H. and Parks, Roland D.},
	title = {Examination and valuation of mineral property},
	publisher = {Addison-Wesley Pub Co.},
	year = {1957.},
	address = {Reading, Mass.,},
	edition = {4th ed.},
	note = {First ed. published in 1933 under title: Mine examination and valuation.}
}