TY  - BOOK
T1  - Feedback mechanisms in the historical collections of the National Museum of History and Technology.
DA  - 1971.
CY  - Washington,
AU  - Mayr, Otto.
CN  - TJ216
CN  - TJ216
PB  - Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]
PP  - Washington,
PY  - 1971.
ID  - 4153
KW  - Feedback control systems
KW  - Governors (Machinery)
TI  - Feedback mechanisms in the historical collections of the National Museum of History and Technology.
ER  -