00401nam a22001097a 4500008004100000082002300041100002800064245010600092260004500198300002200243650002600265220718b        |||||||| |||| 00| 0 eng d  aPOL.SCI CAP NO.165  aRinzin, Yonten Kuenphen  aImpact of smart phone usage on the behaviour and academic performance of teenagers in Bumthang Valley  aThimphu :bRoyal Thimphu College,c2022.  aiv, 71 p.c30 cm.  aStudent research work