For what it's worth, you could add Baburin's Winning Pawn Structures to your list. Out of print now and over £1000 on Amazon, but you might get lucky on eBay or something.
Baburin's book is incredibly good, and it's available on abebooks.com for the "bargain" price of US $89.81. The shipping charge to the US from Leiden, the Netherlands, is US $17.90.
You can download a pdf copy of the book from Scribd. The site is legitimate, I have downloaded dozens of pdf copies of chess books from the site. They have a free 30 day free trial (otherwise I think it is $10USD/month). If you're determined, you can download lots of copies of chess books in 30 days...(from the "documents" menu)...
https://www.scribd.com/document/31596543/Chess-eBook-Baburin-Winning-Pawn-Structures
https://www.scribd.com/search?content_type=documents&page=1&query=winning%20pawn%20structures%20baburin
For what it's worth, you could add Baburin's Winning Pawn Structures to your list. Out of print now and over £1000 on Amazon, but you might get lucky on eBay or something.
Baburin's book is incredibly good, and it's available on abebooks.com for the "bargain" price of US $89.81. The shipping charge to the US from Leiden, the Netherlands, is US $17.90.