Mathematical logic
Petkov, Petio Petrov,
Mathematical logic Petio Petrov Petkov - - Plenum Press, New York 1990 - 412 p - .
Mathematical logic-- Mathematics
511.3 PET-M
Mathematical logic Petio Petrov Petkov - - Plenum Press, New York 1990 - 412 p - .
Mathematical logic-- Mathematics
511.3 PET-M