Semlitsch, Raymond D COMPETITION AMONG TADPOLES OF COEXISTING HEMICLONES OF HYBRIDOGENETIC RANA ESCULENTA: SUPPORT FOR THE FROZEN NICHE VARIATION MODEL. [electronic resource] - Evolution; international journal of organic evolution Aug 1997 - 1249-1261 p. digital Publication Type: Journal Article ISSN: 1558-5646 Standard No.: 10.1111/j.1558-5646.1997.tb03972.x doi