Pencil Drawing Collection (page 6)
Skeleton of sturgeon (acipenser ruthenus)
Illustration of a Skeleton of sturgeon (acipenser ruthenus)
Head louse (Pediculus humanus capitis)
Antique illustration of head louse (Pediculus humanus capitis)
Smooth hammerhead shark (Sphyrna zygaena)
Illustration of a Smooth hammerhead shark (Sphyrna zygaena)