Multiple-shift schooling :
Bray, Mark
Multiple-shift schooling : desing and operation for cost-effectiveness / MarkBray. - Paris : Nueva York : UNESCO; UNICEF, 1989. - 99 p. ; il. - Child family community ; 27. .
371 =20 BRA
Multiple-shift schooling : desing and operation for cost-effectiveness / MarkBray. - Paris : Nueva York : UNESCO; UNICEF, 1989. - 99 p. ; il. - Child family community ; 27. .
371 =20 BRA