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  • About
  • 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.
1

Sex-differentiation in the viviparous teleost "Xiphophorus helleri" Heckel ...

Essenberg, Jacob Martin, January 1900 (has links)
Thesis (Ph. D.)--University of Chicago, 1922. / "Private edition, distributed by the University of Chicago libraries, Chicago, Illinois." "Reprinted from Biological bulletin, vol. XLV, no. I, July, 1923." Bibliography: p. 75-77. Also available on the Internet.

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