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Griffith Brewer | Patrick Y. Alexander Aëronautics
an abridgment of aëronautical specifications filed at the Patent Office from A.D. 1815 to A.D. 1891
Engels | 160 pagina's | Israël, Amsterdam | 1965
Gedrukt boek
Commission of the European Communities Patent information and documentation in Western Europe
an inventory of services available to the public
Engels | 219 pagina's | Saur, München [etc.] | 1988
Gedrukt boek