(3eYLe GdHjhdhLjG aj Ydhe GdCMjGA hGdRQGYI(B: (3GdLRA GdChds - (3eLehYI cJGHs; (3MGeO YHOGdaJGM LhgQs; (3YHOGdYXje Mafj UGHQs; (3eMeO QTGO GdWhHjs ((3GdbGgQIs (3eLeY GddZI GdYQHjI s, 1984)
Keywords: Natural Sciences (3GdYdhe GdHMJIs; General