Rosas, Tito and Wang, James (1993) Determining the Effects of Human Activities on Soil Bacteria: A Possible Non-native Bacteria Producing Pink, Opaque Colony Found in Soil from a Schoolyard and Nocardia farcinia and Bacillus megaterium found to be Rare at Jasper Ridge...Biology 44y project, Jasper Ridge Paper, Stanford University, 16p.