title: [Lethal hybrids].
mesh_terms: D000818:Animals; D001001:Anura; D002025:Bufonidae; D002462:Cell Membrane; D004625:Embryo, Nonmammalian / Q000166:cytology*; D005260:Female; D006822:Hybrid Cells / Q000166:cytology*; D006824:Hybridization, Genetic; D008297:Male; D011894:Rana pipiens; D011896:Rana temporaria
vernacular_title: Quelques observations sur les hybrides létaux.