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A proper concern : a history of the PQ corporation ; 150th anniversary, 1831-1981
Historical Society of Pennsylvania - Closed Stacks Wf* .996
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- Format:
- Book
- Author/Creator:
- Philadelphia Quartz Co
- Language:
- English
- Subjects (All):
- Elkinton family.
- Elkington, Joseph.
- Philadelphia Quartz Co--History.
- Philadelphia Quartz Co.
- Soap trade--History.
- Soap trade.
- Silicate industry--Pennsylvania--Philadelphia.
- Silicate industry.
- Chemical industry--Pennsylvania--Philadelphia.
- Chemical industry.
- Physical Description:
- [44] p. : ill., facsims., ports. ; 26 cm.
- Place of Publication:
- [Valley Forge, PA] : PQ Corp., 1981.
- Local Notes:
- On t.p.: 150th anniversary, 1831-1981.
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