Ellen H. Richards
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The Chocolate Plant, Theobroma Cacao and Its Products
Richards, Ellen H
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Euthenics the science of controllable environment
Ellen H. Richards
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Plain Words About Food
Ellen H. Richards
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The Cost of Living
Richards, Ellen H.
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Euthenics, The Science Of Controllable Environment: A Plea For Better Living Conditions As A First Step Toward Higher Human Efficiency (1910)
Richards, Ellen Henrietta
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First Lessons in Food and Diet
Richards, Ellen Henrietta
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Air, Water, and Food From a Sanitary Standpoint
Ellen Henrietta Swallow, Richards
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