CaleyE&RichardsJ1956
Caley, E. R. & Richards, J. F. C. 1956. Theophrastus on Stones. Introduction, Greek text, English translation, and commentary. The Ohio State University: Columbus Ohio.
Caley, E. R. & Richards, J. F. C. 1956. Theophrastus on Stones. Introduction, Greek text, English translation, and commentary. The Ohio State University: Columbus Ohio.