The effects of restraining boundaries on the passive resistance of sand; results of a series of tests with a medium-scale testing apparatus. Report submitted to the Office of Naval Research, Dept. of the Navy,

"Project No. Nr-081-117. Contract No. Nonr-100 9(00)"

Fuel-efficiency tests on batch oil stills /

Includes index.

Reference materials for collaborative tests of air quality methods /

Mode of access: Internet.

Crash tests of rural mailbox installations /

Mode of access: Internet.

Detroit tests of learning aptitude; a new instrument of mental diagnosis: examiner's handbook,

These tests were developed in the Detroit psychological clinic, a department of the Detroit public schools. cf. Pref.

Double insulated droll tests.

Prepared by William J. Helfrich and Richard L. Reynolds.

Crash tests of single post sign installations using subcompact automobiles /

Mode of access: Internet.

Crash tests of small highway sign supports /

Mode of access: Internet.