Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3770Chemical news office., 1932 |
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Strona 15
... GERMANY . Representative : FRANK BRYAN & Co. , 122 , Newgate Street , London , E.C.1 . BERLIN - PORCELAIN - HALDENWANGER Can be obtained from all businesses which deal in Chemical Apparatus . I Atm る 97 10 20 30 50 60 70 80. Front Cover.
... GERMANY . Representative : FRANK BRYAN & Co. , 122 , Newgate Street , London , E.C.1 . BERLIN - PORCELAIN - HALDENWANGER Can be obtained from all businesses which deal in Chemical Apparatus . I Atm る 97 10 20 30 50 60 70 80. Front Cover.
Strona 24
... apparatus on the surface . The weight of the pipe bears on the bit and multiplies the abrasive effect of it rotation . The rock is ground out ; and water or other fluid - passing downwards through the interior of the pipe and upwards ...
... apparatus on the surface . The weight of the pipe bears on the bit and multiplies the abrasive effect of it rotation . The rock is ground out ; and water or other fluid - passing downwards through the interior of the pipe and upwards ...
Strona
LABORATORY APPARATUS FOR ROUTINE OR RESEARCH WORK Write for Chemical and General Laboratory Apparatus Catalogue ( 24th Edn ) to 66 Dept C " F. E. BECKER & Co. W. & J. GEORGE LTD . , PROPRIETORS , 17-29 , HATTON WALL , LONDON , E.C.1 ...
LABORATORY APPARATUS FOR ROUTINE OR RESEARCH WORK Write for Chemical and General Laboratory Apparatus Catalogue ( 24th Edn ) to 66 Dept C " F. E. BECKER & Co. W. & J. GEORGE LTD . , PROPRIETORS , 17-29 , HATTON WALL , LONDON , E.C.1 ...
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