Research in industrial education summaries of Studies, 1930-1955.

Xehetasun bibliografikoak
Egile nagusia:	U. S. Dept. of Health, Education, and Welfare
Formatua:	Liburua
Hizkuntza:	English
Argitaratua:	Wasington Govt. Print Off. 1957.
Gaiak:	Manual training.