Hispanic contributions to science and engineering : "challenging the future : journey to excellence."

"B - 0405"-P. [3] of cover.

Lewis Research Center : R & D facilities.

"Jun 91"--P. 52.

Fiftieth anniversary : Lewis Research Center.

Shipping list no.: 91-624-P.

African American contributions to science and engineering.

Cover title.

Computers in aeronautics and space research at the Lewis Research Center /

"Sep 90"--P. [12].

Large scale cryogenic fluid systems testing.

Shipping list no.: 92-0614-P.

Accessible careers at NASA Lewis Research Center.

Mode of access: Internet.

Evaluation of Horizons, Inc. Th metal powder : progress report no. 1 for February 18, 1954-March 4, 1954 /

Three samples of thorium powder as supplied by Horizons, Inc. of Cleveland, Ohio were compared. The powder was processed entirely without the use of protective atmospheres with the exception of the sintering which was performed in a tank argon atmosphere with a dew point of approximately -80°C and the hot-pressing which was carried out in vacuum. The equipment and procedures used for cold-pressing and sintering were identical to those used in the evaluation of Sylvania produced thorium powders. The hot-pressing was done with standard uranium hot-pressing equipment.

The Central High School monthly /

Title from caption.

The Central High School monthly /

Includes: "Play-toy town," "Song of the soul of Central," and "Seventry-five dollars" written by Langston Hughes when he was a student at Central High School.

The Central High School monthly /

Includes a poem: "Our service flag" written by Langston Hughes when he was a student at Central High School.

The Central High School monthly /

Includes a poem: "My loves" written by Langston Hughes when he was a student at Central High School.

The Central High School monthly /

Title from caption.

Child care today,

"Star books."

How to teach arc welding in farm mechanics.

Mode of access: Internet.