(3eYLe GdHjhdhLjG aj Ydhe GdCMjGA hGdRQGYI(B: (3GdLRA GdKGfjs - (3eLehYI cJGHs; (3YHOGdYXje Mafj UGHQs; (3eMeO QTGO GdWhHjs; (3MGeO YHOGdaJGM LhgQs ((3GdbGgQIs (3eLeY GddZI GdYQHjI s, 1988)
Keywords: Natural Sciences (3GdYdhe GdHMJIs; General