TY - BOOK AU - Heslin, Thomas M. AU - Park, John J. AU - Sanford Edward L. TI - The effect of various gases on the thermionic emission of tantalum wire filaments [NASA TN D-5850] PY - 1970/// CY - Washington, D.C. PB - Nasa KW - Wire Filaments N1 - Bound With Nasa Tn D- 5841-5849; Technical Note D-5850 ER -