Vol. s2-41, Issue 123, 1866May 01, 1866 EDT
Notes on Chalk and Cretaceous Deposits in Eastern Colorado
Notes on Chalk and Cretaceous Deposits in Eastern Colorado
D. C. Collier,
Collier, D. C. (1866). Notes on chalk and Cretaceous deposits in eastern Colorado. American Journal of Science, s2-41(123), 401–403. https://doi.org/10.2475/ajs.s2-41.123.401