The Ostracoda of the Big Blue series in Nebraska,
by M. E. Upson.
- [Lincoln] Printed by authority of the state of Nebraska, 1933.
- 54, [10] p. incl. IV pl., map, tab. 25 cm.
- Nebraska. Geological survey. Bulletin 8, second ser. .
- Nebraska Geological Survey. Bulletin. no. 8. .