Description
Item Description:On cover: Bulletin of Purdue University, vol. XXVIII, no. 12
Originally submitted as the author's thesis (Ph. D.) at the University of Iowa, 1927
This WorldCat-derived record is shareable under Open Data Commons ODC-BY, with attribution to OCLC
Without thesis note
Physical Description:164 p. : ill. ; 23 cm
164 pages : illustrations ; 23 cm