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Science (New York, N.Y.)|December 17, 1971
Artificial microfossils: experimental studies of permineralization of blue-green algae in silicaJ H Oehler, J W SchopfScience (New York, N.Y.)|March 30, 1973
Microorganisms from the late precambrian of the grand canyon, ArizonaJ W Schopf, T D Ford, W J BreedScience (New York, N.Y.)|March 17, 1972
Carbon isotopic studies of organic matter in precambrian rocksD Z Oehler, J W Schopf, K A KvenvoldenPrecambrian Research|January 1, 1984
Proterozoic stromatolitic microbiotas of the 1400-1500 Ma-old Gaoyuzhuang formation near Jixian, northern ChinaJ W Schopf, Z Wei-Qing, X Zhao-Liang, et al.Science (New York, N.Y.)|February 18, 1977
Chitinozoans from the late precambrian chuar group of the grand canyon, ArizonaB Bloeser, J W Schopf, R J Horodyski, et al.Proceedings of the National Academy of Sciences of the United States of America|February 7, 2001
In situ laser-Raman imagery of precambrian microscopic fossilsA B Kudryavtsev, J W Schopf, D G Agresti, et al.Geology|September 7, 2001
Carbon isotopic composition of individual Precambrian microfossilsC H House, J W Schopf, K D McKeegan, et al.Science (New York, N.Y.)|January 30, 1970
Search for organic compounds in the lunar dust from the sea of tranquiblityC Ponnamperuma, K Kvenvolden, S Chang, et al.Pageof 2