Classification
547 - Organic chemistry
3
660 - Chemical engineering
3
661 - Industrial chemicals
3
662 - Explosives, fuels & related products
3
677 - Textiles
3
025 - Library operations
2
676 - Pulp & paper technology
2
572 - Biochemistry
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1
668 - Technology of other organic products
1
674 - Lumber processing, wood products & cork
1
702 - Miscellany of fine & decorative arts
1
746 - Textile arts
1