Contents: Air Pollution (wm) • Cellulose Paper Fiber (wm) • Chalk (wm) • Corn Starch (wm) • Cosmetic Types (sm) • Dandruff (wm) • Dust, volcanic (wm) • Dust, common (wm) • Dust, iron (wm) • Fiberglass (wm) • Pollen, mixed, sixteen types (wm) • Pollen, mixed, twenty types (wm) • Pollen, mature, lily (wm) • Pollen, germinating (wm) • Salt (wm) • Sand (wm) • Sawdust (wm) • Tobacco, dried (wm) • Toothpaste (sm). Set of 19 slides.
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