1941 Accounting for Barbers and Hair Stylists Book

Das Rechnen der Friseure und Friseurinnen (Accounting for Barbers and Hairstylists) book printed in 1941. This book goes into great, although I fell very speculative accounting practices for hair stylist to help them earn and save money while properly understanding the cost of operating their business. Many sections read like a junior high math problem. It is fascinating to look through and nearly every page leaves you wondering why anyone would calculate these things or even think about them. There are sections on various soaps and what is in them, how much those ingredients will cost and how they are made as well as the weight in Kg of hair produced for various hair cuts etc...

It is in decent condition. The spine is torn at both ends. There is some ink staining on the covers and on a few pages. It measures about 8 1/4" by 5 7/8"