Bulletin of the American Mathematical Society. 1972. Vol. 78 No. 2
Bulletin of the American Mathematical Society. 1972.
Vol. 78 No. 2 : Vol. 78 No. 2. — 1972. — ISSN 0002-9904.
[ SYS NUM: 16115 ]
Vol. 78 No. 2 : Vol. 78 No. 2. — 1972. — ISSN 0002-9904.
[ SYS NUM: 16115 ]