A quantitative study of rhythm; the effect of variations in intensity, rate and duration,

Mode of access: Internet.

Area variations in the wages of agricultural labor in the United States /

Includes bibliographical references.

Variations in the composition and properties of milk from the individual cow /

"January 17, 1913."

Employment Service : variations in local office performance : briefing report to the Chairman, Subcommittee on Employment Opportunities, Committee on Education and Labor, House of Representatives /

"B-236064"--P. 1.