The Social wasps of the Americas : excluding the Vespinae /

by Richards, Owain Westmacott n. 1901-, Richards, Owain Westmacott n. 1901-
Published 1978

Imm's general textbook of entomology /

by Imms, Augustus Daniel 1880-1949, Imms, Augustus Daniel 1880-1949, Richards, Owain Westmacott n. 1901-, Davies, R. G.
Published 1977

Imm's outlines of entomology /

by Imms, Augustus Daniel 1880-1949, Imms, Augustus Daniel 1880-1949, Richards, Owain Westmacott n. 1901-, Davies, Richard Gareth
Published 1978