00417nam a22001697a 450000500170000002000180001704100120003508200150004710000220006224500370008425000120012126000490013330000100018265000140019270000230020670000180022920250621150510.0  a9879937124560  aEnglish  a540bYAD-p  aYadav, Paras Nath  aPrinciples of Chemistry Grade XI  a1st ed.  aKathmandubAdvance Saraswati Prakashanc2079  a684p.  aChemistry  aChaudhari, Upendra  aThapa, Bishal