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Multicolor poster with red, black, and blue lettering. Visual image is illustrations of different types of reproduction and stages of development. This is chart #20 of the Carlson Physiology Charts & Health, Hygiene, Safety and First Aid Charts set. There are images of cell growth and division, different colored chickens, a sperm and egg, an embryo, a pig in the uterus, a mammary gland, and blood circulation before and after birth.
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