Mayr, Otto. <br/><br/>
Feedback mechanisms in the historical collections of the National Museum of History and Technology. 

 - Washington  Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]  1971. 
 - x, 133 p.  illus.  27 cm. 
 - Smithsonian studies in history and technology, no. 12 .
 - Smithsonian studies in history and technology  no. 12. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>71613874 //r86 
<br/><br/><label>Subjects--Corporate Names: </label><br/>National Museum of History and Technology.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Feedback control systems--History.<br/>Governors (Machinery)--History.
<br/><br/><label>LC Class. No.: </label>TJ216  / .M35 
<br/><br/><label>Dewey Class. No.: </label>621.8/12