The mysterious process of digestion is explained in this matter-of-fact introduction to nutrition and physiology. First published in 1970, this title is updated with sharp, new computer-generated illustrations.

What Happens to a Hamburger? 2001, HarperTrophy, New York, NY

ISBN-13: 9780064451833

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What Happens to a Hamburger? 2001, Perfection Learning, New York, NY

ISBN-13: 9780812438499

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What Happens to a Hamburger? 2001, HarperCollins Publishers, New York, NY

ISBN-13: 9780060279479

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What Happens to a Hamburger? 2001, HarperCollins Publishers, New York, NY

ISBN-13: 9780060279486

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What Happens to a Hamburger? 2001, Turtleback Books, New York, NY

ISBN-13: 9780613360265

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What Happens to a Hamburger? 1987, HarperCollins Publishers, New York, NY

ISBN-13: 9780690044270

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What Happens to a Hamburger 1985, Harpercoll, New York, NY

ISBN-13: 9780064450133

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What Happens to a Hamburger? 1985, HarperCollins Publishers, New York, NY

ISBN-13: 9780690044263

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What Happens to a Hamburger? 1985, Turtleback Books, New York, NY

ISBN-13: 9780606100434

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What Happens to a Hamburger? 1976, HarperCollins Children's Books, Sydney

ISBN-13: 9780690012644

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What Happens to a Hamburger? 1970, HarperCollins Children's Books

ISBN-13: 9780690875409

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What Happens to a Hamburger? 1970, HarperCollins Children's Books

ISBN-13: 9780690875416

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