@book{19063,
	author = {Burls, John, and De Beers Consolidated Mines.},
	title = {Progress in industrial diamond technology :},
	publisher = {Academic Press,},
	year = {c1966.},
	address = {London ;},
	note = {The conference was organized by De Beers Consolidated Mines, limited, in collaboration with Haus der Technik in Essen.}
}