1969 - Pfaff's Problem and Its Generalizations [AMS Chelsea Publishing] (Hardcover) ISBN-13: 9780828402217 ISBN-10: 0828402213 ? |
1969 - Pfaff's Problem and Its Generalizations [AMS Chelsea Publishing] (Hardcover) ISBN-13: 9780828402217 ISBN-10: 0828402213 ? |