GS SCORE- To get through UPSC Mains Examination, an aspirant requires having clarity of concept. The concept clarity is the basic step towards attempting the diverse and comprehensive nature of questions that UPSC usually askes. Understanding the linkage of the concept with the contemporary topic and presenting the same in a concise, lucid way fetch maximum marks. To help aspirants to get through this stage of UPSC Examination, GS SCORE has prepared UPSC Mains Notes in the form of subject wise mains study material booklets. Referring to several UPSC Mains related books, we have tried to produce comprehensive, self- explanatory notes for UPSC Mains examination.