Annual report of the School Controller of the School District of Philadelphia.

Latest issue consulted: 9th (1920).

Aviation industry, a call to action : a joint FAA industry partnership to improve pilot/controller communications.

Shipping list no.: 89-297-P.

Cache Creek-Bear Thrust environmental impact statement : proposed oil and gas drilling near Jackson, Teton County, Wyoming : draft /

On cover: U.S. Department of the Interior, Geological Survey, Conservation Division; U.S. Department of Agriculture, Forest Service, Bridger-Teton National Forest.

Hamburg model basin : numerical and experimental investigations on the dependence of the fluctuations of thrust and torque on the blade area ratio of four-blade ship-propellers /

Contract no. N 62558-2223.