Thermophilic Actinomycetes and Fungi in Soils and in Composts Waksman, Selman A. ; Umbreit, W. W. ; Cordon, T. C. Abstract Publication: Soil Science Pub Date: January 1939 DOI: 10.1097/00010694-193901000-00005 Bibcode: 1939SoilS..47...37W