82 pages : illustrations, charts, tables ; 23 cm.

Beiträge zur spektrographischen Untersuchung gewerbehygienisch wichtiger Stoffe : (Benzol, Toluol, Xylol) / von Alfred Luszczak. Gasgeräte und Veränderung der Raumluft :  IV. Abhandlung / von A. Luszckak [and 3 others].

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Beiträge zur spektrographischen Untersuchung gewerbehygienisch wichtiger Stoffe : (Benzol, Toluol, Xylol) / von Alfred Luszczak. Gasgeräte und Veränderung der Raumluft : IV. Abhandlung / von A. Luszckak [and 3 others].