Picture of a Model of a Poultry House, J.D. Robertson (O.A.C. Professor). Ca.1890-1911. 1890- 1911.
Related Entities
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Guelph, Ont.
http://n2t.net/ark:/99166/w6912vp1 (corporateBody)
Robertson, J. D. M. (J. Douglas M.)
http://n2t.net/ark:/99166/w6wd3z8b (person)