ISBN-13: 9780844231013 / Angielski / Miękka / 1966 / 336 str.
ISBN-13: 9780844231013 / Angielski / Miękka / 1966 / 336 str.
Gain a lifetime of experience from the inventor of test marketing and coupon sampling -- Claude C. Hopkins. Here, you'll get two landmark works in one, and discover his fixed principles and basic fundamentals that still prevail today.