Introduction to theory and application of partial algebras
Akademie-Verlag
by Peter Burmeister
Akademie-Verlag 1986 Introduction to theory and application of partial algebras Pt. 1 , Mathematical research = Mathematische Forschung Bd. 32
Available at 9 libraries
Horst Reichel
Akademie-Verlag 1984 Introduction to theory and application of partial algebras pt. 2 , Mathematical research = Mathematische Forschung Bd. 18
Available at 6 libraries