Որոնման արդյունքները
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Concerns of parents related to their special children's termination of schooling
Հրապարակվել է 2001Թեզիս -
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A comparative study of the survival rate of grade one children in the District of Clarin for the school years 1948-1949 and 1958-1959
Հրապարակվել է 1968Visual Material -
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A study on dropouts in grade I classes in the districts of Bogo and San Remigio during the school year 1967-1968 [microform]
Հրապարակվել է 1976Visual Material -
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