Z-Library projesinin bir parçası. Dünyadaki en büyük bilimsel makale koleksiyonu. 70,000,000+ ücretsiz makale.
Good news! In anticipation of the upcoming holidays, we decided to make a small gift for all our users. During Black Friday users who make ANY donation from November 22 to December 1 will get one-month unlimited (up to 999 daily) downloads!