Ruszkowski J., Opyrchalowa J., 1960: Uwagi do stosowanych u nas metod prognozowania pojawu mszycy burakowej – Aphis fabae Scop. 4 pp.
50
2
HEM 2459
Ryckman R. E., 1958: Description and biology of Hesperocimex sonorensis, new species, and ectoparasite of the Purple Martin (Hemiptera: Cimicidae). 15 pp.
50
2
HEM 2460
Ryckman R. E., Ueshima N., 1964: Biosystematics of the Hesperocimex complex (Hemiptera: Cimicidae) and avian hosts (Piciformes: Picidae, Passeriformes: Hirundinidae). 15 pp.