Rusbase Zonals

My post Events Covered by Rusbase mentioned that the database included seven zonal tournaments. I checked these against my own index of zonal events -- World Chess Championship Zonals (version: 'Last updated 2007-09-14') -- and discovered the following:-

• Moscow 1964 [?]
  
• Vilnius 1975 [174]
  
• Lvov 1978 [163]
  
• Erevan 1982 [154]
  
• Lvov 1990 [108; playoff : 337]
  
• St Petersburg 1993 [95; z1.6]
  
• Protvino 1993 [92; z1.5b; what about Kladovo z1.5?, Zouberi z1.5a, and 2 x z1.7]

Links are to the Rusbase page for the event. Numbers in brackets ('[nn]') are the internal numeric ID used in my database of zonals. • Two events need further investigation: Moscow 1964 and zones related to Protvino 1993.