Reichelderfer, K.H. 1981 Economic feasibility of biological control of crop pests.. Beltsville Symposia in Agricultural Research. 5. Biological control in crop production. Allanheld, Osmun & Co. Totowa, N.J. 461 pp.

Notes: [Papers presented at an annual symposium organized by BARC Symposium V Committee; sponsored by and held at Beltsville Agricultural Research Center, MD, May 18-21, 1980.] Gascardia destructor (white wax scale) is mentioned as one of the pests for which the cost vs. the benefits of developing successful control have been tracked in Australia. Along with three other pests the benefit has exceeded costs by 286 million dollars by the year 2000.