Structure of seedlike fructifications found in coal balls from Harrisburg, Illinois ...
By: Harriette Valetta Krick ...
Published: 1932
Place of publication: [Chicago
Language: eng
Number of pages: 172
Subjects: Paleobotany -- Illinois.; Seeds, Fossil.
Notes: "Literature cited": p. 171-172.
Part of thesis (Ph. D.)--University of Chicago, 1930.
"Contributions from the Hull Botanical Laboratory 431."
"Private edition, distributed by the University of Chicago libraries, Chicago, Illinois."
"Reprinted from the Botanical gazette, vol. XCIII, no. 2, 1932."