- Classify works on unicellular parasites in QW 200-260.
- Classify works on parasitic diseases in WC 695-950
Include here works on the history of schools. Classify courses of study, catalogs, etc., in W 19.5.
Classify works on cnidaria in QL 375-379.
Classify general works on scorpions in QL 548.7-.72. Classify works on scorpion stings in WO 830.
Classify general works on spiders in QL 458.4-.42. Classify works on spider bites in WO 830.
Classify works on diseases of insects in SB 942. Classify general works on insect control in QX 600.
Classify here all works on control of arthropods regardless of the specific type. Classify works on pest control in general and other public health aspects in WA 240.