Sex-differentiation in the viviparous teleost "Xiphophorus helleri" Heckel ...
By: by Jacob Martin Essenberg ...
Published: 1923
Place of publication: [Lancaster, Pa
Language: eng
Number of pages: 96
Subjects: Xiphophorus helleri -- Embryology.; Sex differentiation.
Notes: Bibliography: p. 75-77.
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."