Physikalisch-chemisches Centralblatt

1.1904 Michigan-USA* = Google, Illinois-USA* = Google, California-USA* = Google, Harvard-USA* = Google
2.1905 Michigan-USA* = Google, Illinois-USA* = Google, California-USA* = Google, Harvard-USA* = Google
3.1906 Michigan-USA* = Google, Illinois-USA* = Google, California-USA* = Google, Harvard-USA* = Google, New York-USA* = Google
4.1907/08 Michigan-USA* = Google, Illinois-USA* = Google, California-USA* = Google, Harvard-USA* = Google, New York-USA* = Google, Columbia-USA* = Google
5.1908 Michigan-USA* = Google, Illinois-USA* = Google, California-USA* = Google, Harvard-USA* = Google, New York-USA* = Google
6.1908/09 Michigan-USA* = Google, Illinois-USA* = Google, California-USA* = Google, New York-USA* = Google, Columbia-USA* = Google