1975 Pirc Defence G. Friedstein Chess Book

The French Defence Main Line Winawer - John Moles - 1975 Hardback Chess Book

chess book: The Ultimate Pirc by Nunn & McNab OOP

1975 Pirc Defence Chess Book by Friedstein - Very Nice Used-c6612xxx

The Pirc Defence - G.S. Botterill - 1976 Hardback Chess Book

chess book: The Pirc in Black And White by James Vigus

Pirc defense a line for white Chess Pamphlet 1980

New Ideas in the Pirc Defence (Batsford Chess Library)