Toronto/New York/London: Van Nostrand Company, 1950 & 1951.
Two volumes. Quartos, 812 &588 pages. First editions. the standard textbook of agricultural chemistry in the years following the end of World War II, and the massive expansion of the use of chemicals in farming. Frear championed pesticides and other chemicals in all aspects of agriculture, and was early to claim that without pesticides man would be doomed to starvation. Fine in publisher's black cloth.