BARROW, G. M. (1969). Understanding Chemistry: A one volume programmed supplement. W A Benjamin.
Chicago-čujuhus (17. p.)BARROW, Gordon M. Understanding Chemistry: A One Volume Programmed Supplement. New York: W A Benjamin, 1969.
MLA-čujuhus (9. p.)BARROW, Gordon M. Understanding Chemistry: A One Volume Programmed Supplement. W A Benjamin, 1969.
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