Subject
- Entomology--Research2
- Graphite2
- Injection molding of plastics2
- Insects2
- Kurowsky, V.F.2
- Paint industry and trade2
- Paper Makers Chemical Corporation2
- Pentaerythritol tetranitrate2
- Plastics--Extrusion2
- Plastics--Molding2
- Rubber, Chlorinated2
- Scales (Weighing instruments)2
- Science--Study and teaching2
- Struber, Harold2
- Strugala, L.F.2
- Tubby, Andrew2
- Agricultural chemicals1
- Agricultural chemicals industry1
- Agricultural exhibitions1
- Agriculture1