TY - RPRT TI - Helium research in support of superconducting power transmission : annual report (July 1975-September 1976 AU - Jones, M C AU - Arp, V D AU - Parrish, W R AU - Daney, D E AU - Ludtke, P R AU - Frederick, N V AU - Hands, B A PY - 1977 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 77-853 DO - 10.6028/NBS.IR.77-853 ER -