III.—Some remarks upon the variability of form in Lubomirskia baicalensis, and upon the distribution of the Baikal sponges in general

W. Dybowski, H.J. Carter
1884 Annals and Magazine of Natural History  
doi:10.1080/00222938409459760 fatcat:optpsvtcerdtjkkqwt3iqgqy5y