00622nam a2200181Ia 4500 OSt 20230524102139.0 230222s9999||||xx |||||||||||||| ||und|| 9966-830-009 Chuka University Library THE QD 40 .A75 2012 Arimba, Antony Mugiira 8112 Effects of advance organizers on secondary school students' achievement and self concept in Chemistry in Maara district, Kenya Chuka, Kenya Chuka University 2012 69 leaves 1. Chemistry---study and teaching (secondary) 9958 THE lcc 0 0 lcc 0 0 T&D CHK CHK GEN 2023-02-22 0 THE QD 40 .A75 2012 124/2012 2023-05-24 00:00:00 2 2023-02-22 THE 13314 13314