TY - GEN AU - Casida,L E TI - Continuously variable amplitude contrast microscopy for the detection and study of microorganisms in soil SN - 0099-2240 PY - 1976///0706 KW - Bacteria KW - isolation & purification KW - Microscopy, Phase-Contrast KW - methods KW - Soil Microbiology KW - Spores, Bacterial N1 - Publication Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S UR - https://doi.org/10.1128/aem.31.4.605-608.1976 ER -