Improvement of grading practices for the air training command schools.

"ATRC manual 50-900-9."

Annotated bibliography on the effects of irrigation practices on stream water quality with emphasis on salinity and pesticides /

Mode of access: Internet.

Tentative code of recommended practices for testing and measuring air flow in exhaust systems ...

"Originally issued, December 4, 1936. Revised, December 10, 1937."

Border lines in the field of doubtful practices,

Mode of access: Internet.

The perception of space and matter.

Mode of access: Internet.

Effects of conservation practices on storm runoff in the Texas Blackland Prairie /

Includes bibliographical references.

Handbook of modern electric railway methods and practices. A compilation of methods, practices, experiences, and policies of electric railways in the United States,

Mode of access: Internet.

Preparation manual for aviation negligence cases : compendium of regulations, practices and sources of evidence for attorneys engaged in litigation arising out of aviation accidents /

Mode of access: Internet.

Delayed birth registration practices : vital registration areas of the United States.

Item 508.