1.
2.
Naturwissenschaften
; 57(1): 17-23, 1970 Jan.
Article
in German
| MEDLINE
| ID: mdl-5417281
Subject(s)
Biological Evolution , Carbon , Geology , Photosynthesis , Carbon Dioxide , Carbon Isotopes , Geological Phenomena , Origin of Life , Oxygen , Partial Pressure
3.
Naturwissenschaften
; 56(3): 133-4, 1969 Mar.
Article
in English
| MEDLINE
| ID: mdl-5358722