TY  - RPRT
TI  - Calcite sputum lith. Characterization by analytic scanning electron microscopy and X-ray diffraction.
AU  - K P Pritzker
AU  - S D Desai
AU  - M C Patterson
AU  - P T Cheng
PY  - 1981
DO  - 10.1093/ajcp/75.2.253
UR  - https://pubmed.ncbi.nlm.nih.gov/7468529/
ID  - 7468529
ER  -