This antique book by John Herkenhoff, published in 1913, offers valuable insights on how to determine your profits. It is a must-have for collectors and anyone interested in the history of business and finance. The book is in good condition and has been well-preserved over the years. With its vintage cover and yellowed pages, it is a true gem for any book lover or history buff. The content is informative and engaging, providing an in-depth look at the principles of profit calculation. Add it to your collection today and discover the secrets of profitable business!

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