ISBN 9781470449681 books & textbook
The William Lowell Putnam Mathematical Competition: Problems and Solutions 1965-1984 (Problem Books) (AMS/MAA Problem Books, 30)
Gerald L. Alexanderson Leonard F. Klosinski Loren C. Larson Gerald L. Alexanderson Leonard F. Klosinski Loren C. Larson
American Mathematical Society /2018-12-05 Paperback / 147 Pages
isbn-10: 1470449684 / isbn-13: 9781470449681
