21
Published 1995
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

22
Published 2002
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

23
Published 1978
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

24
Published 1987
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

25
Published 1979
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

26
Published 1981
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

27
Published 2005
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

28
Published 2005
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

29
Published 1958
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

30
Published 1974
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

31
Published 1980
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

32
Published 1974
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

33
Published 1976
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

34
Published 1977
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

35
Published 1981
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

36
Published 1982
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

37
Published 1985
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

38
Published 1987
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

39
Published 2005
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...

40
Published 1976
American Chemical Society
...American Chemical Society Division of Petroleum Chemistry...