title: The longevity of thermoactinomycete endospores in natural substrates.
mesh_terms: D004739:England; D005580:Fossils; D049690:History, Ancient; D008848:Micromonosporaceae / Q000302:isolation & purification*; D010163:Paleontology; D012988:Soil Microbiology; D013171:Spores, Bacterial / Q000302:isolation & purification; D014871:Water Microbiology