STD 7 Master Keys STD 7 GEOGRAPHY MASTER KEY ₹125.00 STD 7 HINDI MASTER KEY ₹110.00 STD 7 HISTORY MASTER KEY ₹140.00 STD 7 MARATHI MASTER KEY ₹105.00 STD 7 MATHS MASTER KEY ₹170.00 STD 7 SCIENCE MASTER KEY ₹175.00 STD 7 ENGLISH MASTER KEY ₹160.00