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Effects of organic management on student achievement:

Miller, Robert J ; Rowan, Brian
American educational research journal.  43 (2006)  2 - p. 219-253 , 2006
Link: https://doi.org/10.3102/00028312043002219
Exemplar:  Zentrale:E03 z pae 001 jc/277; Zentrale:Magazin Zs fc 5277