Aaj vigyaan ke yug mein bhee patr vyavahaar ka mahattv kam nahin hua hai. hamen saamaajik athava saarvajanik jeevan mein yada-kada patr likhane kee aavashyakata padatee hee rahatee hai. saamaajik evan saarvajanik patr kee aavashyakata ko mahaso...
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