Birkenheim A. Workshop on Synthetic Drugs and Fragrances and Photoreagents. In Russian (ask us if in doubt)/Berkengeym A. Praktikum po sinteticheskim lekarstvennym i dushistym veshchestvam i fotoreaktivam. Goschemizdat 1942. 232 p. SKUalb0c6aa6f51b2fc50d.