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. Transactions. 8 7 8 9 10 1,900° F. 1 2 3 4 5 6 7 8 9 10 Repeated Use at 1,750° 1st 10 2d 10 3d 10 4tli 10 COMMERCIAL CARBONIZING-MATERIALS. 391. TIME IN HOURS .•2| 1 i--i--r — n—1 .1 osH- — P7 Z H-J--4-- -L I_ 1—r—r- t-l- r_i I I I I 1 I ;; I--|--f—^ p-l l--L-4--^
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
