Machines and Inventions I  -- China  Educational Technologies Limited  2004 <br/>78 p.:  col,  30cm <br/><br/><label>ISBN: </label>9628851551 <br/><br/><label>Subjects--Topical Terms: </label><br/>Machines and Inventions I<br/><br/><label>Dewey Class. No.: </label>HS Ref 600 M184 2004 V.1