TY - RPRT TI - Helium research in support of superconducting power transmission : annual report (October 1978- September 1979) AU - Daney, D E PY - 1980 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 80-1637 DO - 10.6028/NBS.IR.80-1637 ER -