Group of PEA teachers, . (2004). PEA's work book in Physics for B. E. entrance. Kathmandu: .
Group of PEA teachers, . 2004. PEA's work book in Physics for B. E. entrance. Kathmandu: .
Group of PEA teachers, . PEA's work book in Physics for B. E. entrance. Kathmandu: . 2004.
