Guide to the identification of plant macrofossils in Canadian peatlands Lévesque, P. E. M. creator text book Ottawa Agriculture Canada 1988 1988
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ENG Bryophytes, Fossil Canada Identification Paleobotany Peatlands Publication, no. 1817E https://www.biodiversitylibrary.org/bibliography/53794 0660922894 10.5962/bhl.title.53794