Bulletin of the Amateur Entomologists' Society - Amateur Entomologists' Society (Great Britain) (Amateur Entomologists' Society, 2007)

Invertebrate conservation news - Amateur Entomologists' Society (Great Britain) (Amateur Entomologists' Society, 2007)

Invertebrate conservation news - Amateur Entomologists' Society (Great Britain) (Amateur Entomologists' Society, 2007)

Libellulinen - Ris, F. (Friedrich), 1867 -1931 (1916)

Libellulinen - Ris, F. (Friedrich), 1867 -1931 (1916)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Second larval instars of Florida Anisoptera (Odonata) - Dunkle, Sidney Warren, 1940 - (1980)