Has anyone seen this video "From Mao to Mozart: Isaac Stern in China"?

   CV-002 "From Mao to Mozart: Isaac Stern in China", published in 1980
   Murray Lerner, dir., Hopewell Foundation, distr.  Karl-Lorimar Home
   Video, CA, 1980.  84 min.  Grades 7-12+

   In 1979, violinist Isaac Stern made a diplomatic visit to China as
   part of a cultural exchange program.  This documentary shows Stern's
   encounters with Chinese musicians who had been forbidden to hear or
   play "decadent" Western music during the Cultural Revolution.  He
   holds a master class with talented Chinese students, and conducts a
   public performance of Beethoven with a Chinese orchestra.

Note: Additionally, could anyone tell me where I could buy this video?

Thank you and kind regards, JL, Sydney, Australia.