TY  - BOOK
AU  - Mayr,Otto
TI  - Feedback mechanisms in the historical collections of the National Museum of History and Technology
T2  - Smithsonian studies in history and technology, no. 12
AV  - TJ216 .M35
U1  - 621.8/12 
PY  - 1971///
CY  - Washington
PB  - Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]
KW  - National Museum of History and Technology
KW  - Local
KW  - Feedback control systems
KW  - History
KW  - Governors (Machinery)
N1  - Includes bibliographical references
ER  -