00752nam a2200193Ia 4500 20250508161832.0 008 250505s9999 xx 000 0 eng d Dissertations FEDL eng FEDL eng eng 540.7, GUP/DI FEDL Gupta Pramod Kumar 524473 Construction of a programmed text on 'electronic theory of valency' (Chemistry) for class 10th of Haldwani, distt, (Nainital) and finding out experimentally the effectiveness of high and low achievers in chemistry as compared to class room teaching 1976 92p. M. Ed. Dissertation (Delhi University) DIS 540.7, GUP/DI 1372556 1372556 0 0 0 0 FEDL FEDL 2025-05-08 0 540.7, GUP/DI EL0062387 2025-05-08 16:18:32 2025-05-08 DIS