This appears to be a corrected version of the original Ricordi edition. Quoting from the forward (by Gunter Joppig):
--Homerdundas 07:20, 25 November 2009 (UTC)
It's a ca.1982 engraving. Definitely not a reprint of a Ricordi - unless Ricordi happened to have issued a new engraving of the piece themselves in the 1960s or 1970s. I even recognize the engraver - EMB of Budapest. Sort of interesting that there would no editorial credit or copyright claim. Especially odd in light of their claims with respect to the Mahler critical edition, which are corrected reprints of earlier engravings made before 1915. Carolus 07:26, 25 November 2009 (UTC)
I hope I haven't messed things up here... UE made a copyright claim - the words which I removed prior to making the PDF. I understand that error corrections do not constitute a copyright claim - which is why I quoted form the forward. (I gather that the forward itself is under copyright). The engraving, I understand, is copyright for 25 years in EU, and 0 years in Canada. --Homerdundas 07:36, 25 November 2009 (UTC)
Please do replace the page with the copyright claim.
Did they credit an editor also?
Other than Gunter Joppig, there is no editor listed. The forward details nothing, but the corrections. --Homerdundas 08:14, 25 November 2009 (UTC)