[Contribution to science (on the 70th birthday of Vladimir Stepanovich Ershov)].
D000818:Animals; D006376:Helminths; D049673:History, 20th Century; D010274:Parasitology / Q000266:history; D012425:Russia (Pre-1917); D014586:USSR
Vklad v nauku (k 70-letiiu Valdimira Stepanovicha Ershova)