ERIC Clearinghouse on Educational ManagementCharters, W. W. (Werrett Wallace), 1921-2006-09-062006-09-0619920865521158https://hdl.handle.net/1794/3277viii, 44 p.A print copy of this title is available through the UO Libraries under the call number: KNIGHT Q180.55.M4 C47 1991334123 bytesapplication/pdfen-USResearch -- Methodology -- Handbooks, manuals, etcVariables (Mathematics) -- Handbooks, manuals, etcHypothesis -- Handbooks, manuals, etcBook