His Principles of food chemistry, c1990: CIP t.p. (John M. deMan, Ph. D., Dept. of Food Science, Ontario Agricultural College, Univ. of Guelph, Guelph, Ont., Canada)
LC data base, 2-21-89 (hdg.: DeMan, J. M., 1925- ; usage: John M. DeMan; J.M. DeMan)
The physical structure of butter as affected by newer manufacturing processes, 1959: title page (J.M. de Man; Department of Dairying, University of Alberta)
Genealogy Quebec's online obituaries, viewed February 12, 2019: deMan, John M. (deMAN, John M. (Dr.) Passed away on January 12, 2010 in Guelph at the age of 84. Born in the Netherlands, immigrated in 1954 to Canada; was a former professor at the Univ. of Alberta until 1968 and then at the Univ. of Guelph where he was Chairman of the Food Science Dept.) https://www.genealogiequebec.com/necro/ontario/toronto/the-globe-and-mail-toronto-on/469322/DEMAN-John-M-/obituary