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Making inventions pay a practical guide to selling, protecting, manufacturing, and marketing your inventions Joseph C. Keeley

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Penerbit New York McGraw-Hill Book Company.,
Edisi -
Subjek Salesman and salesmanship
ISBN/ISSN -
Klasifikasi -
Deskripsi Fisik xiv, 246 p. 21 cm
Info Detail Spesifik -
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