GERSHKOVICH, N L [A method for the estimation of the number of fleas in Rhombomys optimus burrows]. [electronic resource] - Meditsinskaia parazitologiia i parazitarnye bolezni - 578-84 p. digital Publication Type: Journal Article ISSN: 0025-8326 Subjects--Topical Terms: AnimalsFlea InfestationsGerbillinaeSiphonaptera