TY - RPRT TI - Isobutane : provisional thermodynamic functions from 114 to 700 K at pressures to 700 BAR AU - Goodwin, Robert D PY - 1979 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 79-1612 DO - 10.6028/NBS.IR.79-1612 ER -