20th century war: the american experience / Robert H. Berlin Shaping China's future in world affairs : the U.S. role / Robert G. Sutter Strategic requirements for the army to the year 2000 / ed. by Robert H. Kupperman, William J. Taylor, Jr Johnson rifles and machine guns : the story of Melvin Maynard Johnson, Jr. and his guns international law studies law of war and neutrality at sea / by Robert W. Tucker