There seems to be a problem with the "full score" of subject Rachmaninoff piano concerto #3.
( http://imslp.org/wiki/Piano_Concerto_No ... _Sergei%29
Editor: Pavel Lamm (1882–1951)
Publisher Info.: Moscow: Muzgiz, n.d.(1947–48) )
Our conductor found that pages 5 and 6 have swapped places.
I will continue to scan this PDF file to see if there are other anomalies.
Thank you for your comments and regards.