(1992). Cole - Parmer 1991/1992 Instrument Company. USA: North Oak Park Avenue, Chicago, Illinois.
Trích dẫn kiểu ChicagoCole - Parmer 1991/1992 Instrument Company. USA: North Oak Park Avenue, Chicago, Illinois, 1992.
Deismireacht MLACole - Parmer 1991/1992 Instrument Company. USA: North Oak Park Avenue, Chicago, Illinois, 1992.
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