PT - JOURNAL ARTICLE AU - FOX, DENIS L. TI - BIOCHEMICAL FOSSILS AID - 10.1126/science.100.2589.111 DP - 1944 Aug 11 TA - Science PG - 111--113 VI - 100 IP - 2589 4099 - http://science.sciencemag.org/content/100/2589/111.short 4100 - http://science.sciencemag.org/content/100/2589/111.full SO - Science1944 Aug 11; 100