Sugiyama, G. (1996). Valve apparatus and hydraulic drive system. Patent Office Calcutta.
Chicago Edition CitationSugiyama, Genroku. Valve Apparatus and Hydraulic Drive System. Calcutta: Patent Office Calcutta, 1996.
Deismireacht MLASugiyama, Genroku. Valve Apparatus and Hydraulic Drive System. Patent Office Calcutta, 1996.
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