- Shell selective weed killers for the effective control of weeds in crops and grassland, with, Pests of farm crops.

Shell Chemical Company Limited, 1957. Reprint. Softcover. 2 clean and tightly bound paperbacks, stapled spines, pictorial covers, no inscriptions, appears little used. Weed: 96 pages, illustrations on plates, index. Pests: 48 pages, illustrations in the text. Two of the reasons why the diversity of our wildlife has suffered in the last 50 years. Good.