1. An analysis of captures of Aphididae (Hemiptera) in a light trap;Broadbent;Trans. R. ent. Soc. Lord.,1947
2. Development of research on the insect aerofauna;Johnson;Brit. Sci. News,1949
3. A suction trap for small airborne insects which automatically segregates the catch into hourly successive samples;Johnson;Ann. appl. Biol.,1950a
4. The comparison of suction trap, sticky trap and tow-net for the quantitative sampling of small airborne insects;Johnson;Ibid.,1950b
5. Aphids captured in a Rothamsted suction trap, 5 ft. above ground level, from June to November, 1947;Johnson;Proc. R. ent. Soc. Lond. (A).,1951