Authors: HALLIDAY TR HEYER WR

Citation: Tr. Halliday et Wr. Heyer, THE CASE OF THE VANISHING FROGS, Technology review, 100(4), 1997, pp. 56-63

Authors: HEYER WR

Citation: Wr. Heyer, GEOGRAPHIC-VARIATION IN THE FROG GENUS VANZOLINIUS (ANURA, LEPTODACTYLIDAE), Proceedings of the Biological Society of Washington, 110(3), 1997, pp. 338-365

Authors: HEYER WR GASCON C

Citation: Wr. Heyer et C. Gascon, COLLECTION NOTES AND CALL CHARACTERISTICS FOR ISCHNOCNEMA-QUIXENSIS AND PHYZELAPHRYNE-MIRIAMAE (AMPHIBIA, ANURA, LEPTODACTYLIDAE), Journal of herpetology, 29(2), 1995, pp. 304-307

Authors: HEYER WR

Citation: Wr. Heyer, SOUTH-AMERICAN ROCKY HABITAT LEPTODACTYLUS (AMPHIBIA, ANURA, LEPTODACTYLIDAE) WITH DESCRIPTION OF 2 NEW SPECIES, Proceedings of the Biological Society of Washington, 108(4), 1995, pp. 695-716

Authors: HEYER WR

Citation: Wr. Heyer, HYLA BENITEZI (AMPHIBIA, ANURA, HYLIDAE) - FIRST RECORD FOR BRAZIL AND ITS BIOGEOGRAPHICAL SIGNIFICANCE, Journal of herpetology, 28(4), 1994, pp. 497-499