harmonica : 165 phrases in 25 subjects |
Communications | 16 |
Cultural studies | 2 |
Earth sciences | 4 |
Electric motors | 1 |
Electric traction | 1 |
Electricity generation | 2 |
Electronics | 65 |
Energy industry | 1 |
Industry | 1 |
Information technology | 2 |
Life sciences | 2 |
Magnetics | 13 |
Mathematics | 28 |
Mechanic engineering | 2 |
Medical | 1 |
Metallurgy | 1 |
Pharmacy and pharmacology | 1 |
Piezoelectric crystals | 1 |
Power electronics | 4 |
Radio | 1 |
Scientific | 6 |
Sound recording | 1 |
Statistics | 7 |
Technology | 1 |
Telegraphy | 1 |