Goldschmiedt, H. (1973). Practical formulas for hobby or profit (1a. ed.). Chemical Publishing Co.

Goldschmiedt, Henry. Practical Formulas for Hobby or Profit. 1a. ed. Nueva York: Chemical Publishing Co, 1973.

Goldschmiedt, Henry. Practical Formulas for Hobby or Profit. 1a. ed. Chemical Publishing Co, 1973.