00000nam##2200000za#4500 9.697428 CaOODSP 20210624235457 cr ||||||||||| 150407|1961||||xxc|||||o f|0| 0 eng|d CaOODSP eng n-cn--- A43-1066/1961E-PDF Canada. Agriculture Canada. Research Branch. Ecology of the aspen parkland of Western Canada in relation to land use / [electronic resource] by Ralph D. Bird. Ottawa - Ontario : Agriculture Canada. February 1961. 184p. maps, references, photographs, index Historical publication digitized by Agriculture and Agri-Food Canada. 13-17-Supp 2013-07-25 Ecology gcpds http://publications.gc.ca PDF 17.97 MB https://publications.gc.ca/collections/collection_2013/aac-aafc/agrhist/A43-1066-1961-eng.pdf 1066