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Those mean nasty dirty downright disgusting but-- invisible germs
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Judith Rice |
A little girl, who accumulates germs on her hands during her busy day, defeats them by washing her hands before meals. |
OL1851541W |
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Microbes at work
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Millicent E. Selsam |
Presents basic information on the microbes commonly found on foodstuffs--bacteria, molds, and yeast--and discusses ways man has found of discouraging the growth of undesirable microbes, and fostering… |
OL1876475W |
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Manual of microbiological methods
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American Society for Microbiology. Committee on Bacteriological Technic. |
Mainly concerned with the cultivation and study of bacteria,never the less it is still a useful addition to the microscopist s libary |
OL7517549W |