Sibi P.A. (2009). Availability and utilization of audio visual aids by teachers for biological teaching in secondary schools of Ernakulam district.
シカゴスタイル引用形Sibi P.A. Availability and Utilization of Audio Visual Aids by Teachers for Biological Teaching in Secondary Schools of Ernakulam District. 2009.
MLA引用形式Sibi P.A. Availability and Utilization of Audio Visual Aids by Teachers for Biological Teaching in Secondary Schools of Ernakulam District. 2009.
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