na YOGYA-02090000000321 20090227020337.0 ind 81-223-0214-9 010-020900000000321 531.6 Has E R HASHMI, A.H Energy A.H. Hashmi ; editor, Rajiv Garg t th. ed New Delhi Pustaka Mahal 24 cm 32 hlm ilus 24 cm Children's science library Kekuatan dan energi Garg, Rajiv YOPDYOG [J] 18-01-2005 1 Sofi 04P03427