TY - RPRT TI - Circular of the Bureau of Standards no. 509: bibliography of books and published reports on gas turbines, jet propulsion, and rocket power plants AU - Fiock, Ernest F PY - 1951 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS CIRC 509 DO - 10.6028/NBS.CIRC.509 ER -