Supervision in a new key

Sonraí bibleagrafaíochta
Príomhchruthaitheoir:	Wilhelms, Fred T. (Fred Theodore) 1907-
Formáid:	LEABHAR
Teanga:	English
Foilsithe / Cruthaithe:	Washington Association for Supervision and Curriculum Development [1973]
Ábhair:	School supervision.