581.65 C Canada. Dept, of agriculture. Farm weeds of Canada, by George H. Clark.,, and James Fletcher..., With ilustrations by Norman Criddle. 2d ed., rev. and enl. by George H. Clark, pub. in 1909. reprinted by direction of the Hon W. R. Motherwell, minister of agricultura. Ottawa, 1923. Ottawa, F. A. Acland. -printer, 1923. 192 p. ilus, 76 col pl. 26 cm.