February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

The Senate is one of the two houses of the Congress, created in Article I, Section 1 of the US Constitution. The Senate has 100 members, who serve for 6-year terms with one-third of the seats up for re-election every two years. Every state has two Senators. This book sheds light on the structure and operating procedures of this dynamic body.

The NACA and aircraft propulsion, 1915-1958 -- NASA gets to work, 1958-1975 -- The shift toward commercial aviation, 1966-1975 -- The quest for propulsive efficiency, 1976-1989 -- Propulsion control enters the computer era, 1976-1998 -- Transiting to a new century, 1990-2008 -- Toward the future