 |
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| photogravure (A process for printing from a photographic negative transferred to a metal plate and etched in) | |||
| photoengraving | |||
| block making; plate-making; platemaking | |||
| heliogravure | |||
| etching blanking; form etching | |||
| photogravure | |||
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| photo-engravings | |||
| photogravure: 22 phrases in 6 subjects |
| Communications | 5 |
| Cultural studies | 1 |
| Electronics | 2 |
| General | 1 |
| Industry | 12 |
| Natural resourses and wildlife conservation | 1 |