TY - BOOK AU - Armitage, P. TI - Statistical methods in medical research SN - 0632054301 U1 - 610.182 ARM PY - 1971///. repr. 1973 CY - Oxford PB - Blackwell Scientific KW - Medicine KW - Research KW - Statistical methods KW - Biometry KW - Statistics N1 - Includes bibliographical references (p. 478-485) ER -