Poincare - Science and Method - New paperback or softback - 52 - X555z

Hazlitt - Thinking As a Science - New paperback or softback - 26 - X555z

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Koehler - Method of Physical Drill - New paperback or softback - 26 - X555z

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Poincare - Science And Method - New paperback or softback - 22 - X555z

Poincare - New Physics and Its Evolution - New paperback or softback - - X555z

Say - American Entomology - New paperback or softback - 26 - X555z