1. ALDRICH, R. c., BAILEY, W. F. and HELLER, R C., 1959. Large scale 70 mm color photography techniques and equipment and their application to a forest sampling problem. Photogrammetric Eng. 25, 747–54.
2. ANDRZEJEWSKA, L. and WOJCIK, Z, 1970. The influence of Acridoidea on the primary production of a meadow (field experiment). Ekol. Polska
18, 89–109.
3. ASKEW, R. R. 1968. A survey of leaf-miners and their parasites on laburnum. Trans. R. ent. Soc. Lond. 120, 1–37.
4. BARDNER, R., 1968. Wheat bulb fly, Leptohylemyia coarctata Fall, and its effect on the growth and yield of wheat. Ann. appl. Biol. 61, 1–11.
5. BARDNER, R., FLETCHER, K. E. and HUSTON, p., 1969. Recent work on wheat bulb flies. Proc. 5th Br. Insecticide Fungicide Conf. 500–4.