Why 250,000 children quit school; the yearly army that drops out of line--standards too high and teaching too dull

"Reprinted from the 'World's work,' August, 1910."

Facilities, National Institute of Standards and Technology.

"September 1988"--P. [3] of cover.

Standards of American legislation : an estimate of restrictive and constructive factors /

Mode of access: Internet.

Railroad track standards.

"April 1991."