Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Adams, G. D. and Gentle, G. C.","Spatial changes in waterfowl habitat, 1964-74, on two land types in the Manitoba Newdale plain",,Fisheries and Environment Canada,1978,Occasional paper,,0662100425,,https://cir.nii.ac.jp/crid/1130000795626005376