Subject
- Charles E. Sholes Company1
- Charles H. Phillips Chemical Co.1
- Chemical elements--Thermal properties1
- Chemical laboratories--Standards1
- Chemical plants1
- Chemical reactions1
- Chemical workers1
- Chemicals--Properties1
- Chemicals--Transportation1
- Chemistry teachers1
- Chemistry--Nomenclature1
- Chemistry--Societies, etc.1
- Chemotherapy1
- Chloroprene1
- Chocolate1
- Chromatographic analysis1
- Church, A. H. (Arthur Herbert), 1834-19151
- Church, James Robb, 1866-19231
- Cipher and telegraph codes1
- Civil defense readiness1