Okoroanyanwu, U. Chemistry and Lithography, Second Edition, Vol. 1: The Chemical History of Lithography. SPIE Digital Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOkoroanyanwu, Uzodinma. Chemistry and Lithography, Second Edition, Vol. 1: The Chemical History of Lithography. SPIE Digital Library.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOkoroanyanwu, Uzodinma. Chemistry and Lithography, Second Edition, Vol. 1: The Chemical History of Lithography. SPIE Digital Library.
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