Philadelphia, A.H. Thomas, 1950. viii, 1272, 124 (reagents), 61 (index) pp. Large 4to (21,5 x 27 cm). Original red/orange buckram (partly slightly faded and/or discolored, light wear along extremities). With a very large number of illustrations in the text.
A huge and profusely illustrated catalogue. The Thomas company is in business since 1900.