| Number |
Subject |
| 333.73 |
Soil salinity |
| 333.79 |
Energy |
| 333.790994 |
Greenhouse effect |
| 371.3028 |
Study method |
| 532 |
Fluid mechanics |
| 574.1905 |
Biotechnology and bioengineering |
| 574.192 |
Biochemistry |
| 574.19305 |
Enzyme and microbial technology |
| 574.52642 |
Forestry and timber industry |
| 621.38220151 |
Wavelet (Mathematics) |
| 622 |
Mining and related operations |
| 660 |
Chemical engineering and related technologies |
| 660.2 |
General topics in chemical engineering |
| 660.6 |
Biotechnology |
| 660.7 |
Industrial stoichiometry |
| 661 |
Technology of industrial chemicals |
| 662 |
Technology of explosives, fuels, related products |
| 663 |
Beverage technology |
| 664 |
Food technology |
| 665 |
Technology of industrial oils, fats, waxes, gases |
| 666 |
Ceramic and allied technologies |
| 667 |
Cleaning, color, related technologies |
| 668 |
Technologies of other organic products |
| 669 |
Metallurgy |
| 808.02-808.06 |
Essay, reports and technical writing |
