| 000 | 00362n a2200133ua 4500 | ||
|---|---|---|---|
| 040 | _aP K Kelkar Library, IIT Kanpur | ||
| 082 |
_a621.38151 _bP539p |
||
| 100 | _aPhilips | ||
| 245 | 0 |
_aPhotomultiplier tubes _cPhilips |
|
| 260 |
_a _bPhilips Electron Tube Division _c1965 |
||
| 300 | _a(various pagings) | ||
| 650 | _aElectron Tubes | ||
| 997 | _aA986 s C | ||
| 999 |
_c457457 _d457457 |
||