A rapid concentrating still. (Q39967379)
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(P31) (Q13442814)
(P304) 302-5, illust
(P433) 4
(P478) 30
(P577) Monday, August 1, 1949
(P1433) (Q26842212)
(P1476) "A rapid concentrating still" (language: en)
(P2093) VAN HEYNINGEN WE
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