Püttmann W, Kalkreuth W. Comparison of hydrocarbon compositions in a sequence of humic coals, cannel coals and oil shales from the Pictou Coalfield, Nova Scotia. atlgeo [Internet]. 1989 Apr. 1 [cited 2024 May 6];25(1). Available from: https://journals.lib.unb.ca/index.php/ag/article/view/1674