"For pupils preparing for promotion examinations ... entrance examinations ... public school leaving examinations ... junior and senior leaving examinations, students preparing for teachers' certificates, and all other official examinations"
"Report is the result of four years' consideration and debate by the Science Council's Committee on Canada's Scientific and Technological Contribution to World Food Supply."--Pref
"The present volume is a collection of the texts of the existing intergovernmental commodity control agreements, and of extracts from the principal international pronouncements on commodity control policy."