Cram J. Department of Manpower and Immigration. <i>CANADIAN CLASSIFICATION AND DICTIONARY OF OCCUPATIONS 1971 VOLUME I: CLASSIFICATIONS AND DEFINITIONS</i>. CJCP [Internet]. 2012 Jan. 30 [cited 2024 Apr. 24];7(1). Available from: https://cjc-rcc.ucalgary.ca/article/view/59900