The foreman discovers motion study [motion picture]

Target barrio di De Young, John

Motivation research in advertising and marketing di Smith, George Horsley

Results of a questionnaire on the present status of scientific research and development in the Philippines

Methods of research educational, psychological, sociological di Good, Carter Victor 1897-

Methods of research educational, psychological, sociological di Good, Carter Victor 1897-

Statistical methods in educational and psychological research di Wert, James Edwin

Scientific research and Philippine progress di Varela, Miguel Ma

Testo

Fish-culture in paddy-fields in the Federation of Malaya di Song Min Kong

Standards for methods and records of hydrologic measurements.