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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 2 of 2 (0.053 seconds)Spelling suggestions: "subject:"helminthoglyptidae."" "subject:"helminthological.""
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Chromosomes of Helminthoglyptidae (Pulmonata: gastropoda)Babrakzai, Noorullah, 1945- January 1975 (has links)
No description available.
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Systematics and biogeography of the Helminthoglyptidae of Sonora.Naranjo-Garcia, Edna. January 1988 (has links)
A study of the Helminthoglyptidae of Sonora was undertaken to determine the extent of their distribution and speciation. As a result, nine new species of Sonorella are described, and new ranges of the known species are given. The status of the family is reviewed and its standing is supported with the analysis of morphological characteristics of several genera. The zoogeography of the family and its distribution are shown. Possible dispersal and isolation mechanisms are discussed in order to explain the present distribution of these snails, and comments on ecological and speciation accounts are offered.
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