Subject
- Leeuwenhoek, Antoni van, 1632-17231
- Life sciences1
- Machinery4
- Magic tricks1
- Magicians1
- Magnetic tapes1
- Magnifying glasses1
- Maison Nachet & Fils (Paris)1
- Margarine1
- Margarine--Marketing1
- Medical care3
- Medical laboratories1
- Medical laboratories--Equipment and supplies1
- Medicine1
- Medicine bottles3
- Meeker burner1
- Metal-work1
- Michigan--Midland1
- Microbiologists2
- Microbiology1