Does anybody in the list understand what is happening with Comment on
modern physics (Gordon and Breach) ?
First there were several series of Comments :
Comments on modern physics part B
Comments on plasma physics and controlled fusion
Comments on nuclear and particle physics
Comments on atomic and molecular physics
Comments on astrophysics and space based science.
ISSN online says they merged in 1999 to form one title, "Comments on modern
physics".
We never received the old series, except Comment on atomic and molecular
physics, received until 1996. We are currently receiving the new Comments
on modern physics since march 1999.
But, we have just received two issues of two old series, dated 1999 (ie.
after the merge) !
I am wondering if the old series are keeping on continuing while the new
title is being published ? If anybody has any clue about this case, I would
be very happy to hear it.

Isabelle Copin
Biblioth�que nationale de France
Gestion centralis�e des acquisitions - P�riodiques
 <ISABELLE.COPIN@BNF.FR>