by Wolfgang Ostwald ; 2nd English ed. translated from the 3rd German ed. by Martin H. Fischer ; with numerous notes added by Emil HatschekP. Blakistonc1919
by Wolfgang Ostwald ; 2nd English ed. translated from the 3rd German ed. by Martin H. Fischer ; with numerous notes added by Emil HatschekJ. & A. Churcill1919
by Wolfgang Ostwald ; first English edition translated from the third German edition by Martin H. Fischer ; with the assistance of Ralph E. Oesper and Louis BermanJ. & A. Churchillc1915