Morris H. Hansen Sample survey methods and theory. Vol 2 Theory - Newyork John Wiley and Sons 1953 - 332p Morris H. Hansen; William N. Hurwitz & William G. Madow: Sample survey methods and theory. Vol 2 Theory. Newyork. John Wiley and Sons, 1953.--(519.52HAN) ENGLISH Dewey Class. No.: 519.52 / HAN