title: Varieties and mating types in Paramecium bursaria; new variety and types, from England, Ireland, and Czechoslovakia.
authors.forename: T T
authors.initials: TT
authors.lastname: CHEN
mesh_terms: D000818:Animals; D001686:Biological Phenomena; D003604:Czechoslovakia; D004739:England; D056890:Eukaryota; D007448:Invertebrates; D007494:Ireland; D010247:Paramecium; D010829:Physiological Phenomena