TY - RPRT TI - Chemical and X-ray analyses of 175 calcite and marble samples from the collection of the National Museum of Natural History, Smithsonian Institution AU - Eurybiades Busenberg AU - Niel Plummer PY - 1984 DO - 10.3133/ofr83863 UR - https://pubs.usgs.gov/publication/ofr83863 ID - ofr83863 ER -