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1LEABHARFoilsithe / Cruthaithe 1963“…American Association of Physics Teachers. Committee on Resource Letters…”
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2LEABHARFoilsithe / Cruthaithe 1971“…American Association of Physics Teachers. Committee on Resource Letters…”
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3LEABHARFoilsithe / Cruthaithe 1966“…American Association of Physics Teachers. Committee on Resource Letters…”
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4LEABHARFoilsithe / Cruthaithe 1966“…American Association of Physics Teachers. Committee on Resource Letters…”