Elisha Collier: Verskil tussen weergawes

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Lyn 42:
In die 1830's het Collier 'n nuwe ketel vir [[stoomskepe]] uitgevind.<ref>{{Cite journal
|title=Collier's Patent Steam-Boilers and Safety Breathing-Tube
|journal=[[The Mechanics' Magazine]]
|date=3 Desember 1836
|volume=XXVI