Preparation of Humic Acids from Illinois Coal
Authors: Yohe, G.R. and Harman, C.A.
Preparation of Humic Acids from Illinois Coal
Authors: Yohe, G.R. and Harman, C.A.
Recent Advances in Spectroscopy* Author: Michelson, A.A.
The Relation of the State Academy of Science to the Natural History Surrounding the Chicago Academy of Sciences Author: Baker, F.C.
Recent Advances in Spectroscopy* Author: Michelson, A.A.