@article {27107,
	title = {The origin of petroleum porphyrins : the position of the Athabasca oil sands. In : The K. A. Clark volume on the Athabasca Oil Sands : a collection of papers on the Athabasca Oil Sands presented to K. A. Clark on the 75th anniversary of his birthday, edit},
	volume = {Information Series No. 45. Contribution No. 222},
	year = {1963},
	note = {Second Athabasca Oil Sands Conference held in the Northern Alberta Jubilee Auditorium, Edmonton on October 30 and 31, 1963},
	pages = {75-100},
	institution = {Research Council of Alberta},
	address = {Edmonton, AB},
	author = {Hodgson, G. W. and Peake, E. and Baker, B. L.}
}
