Martin's" Recherches sur la vie et les ouvrages d'Heron d'Alexandrie disciple de Ctesibius et sur tous les ouvrages mathematiques grecs conserves ou perdus,publies ou inedits, 9ui ont ete attribues a un auteur nomme Heron "(Mem. [Please select]
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This conserves energy and works well so long as conditions remain the same. [Please select]
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Elsewhere they worked in secondary agricultural industries (weaving, preparation of food conserves, home industries, and even textile factories) and provided supplementary income for their families. [Please select]
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