TY - BOOK AU - U.S. department of health education and welfare, Proceeding third U.S.-USSR joint symposium on congenital heart disease bethesda, maryland April 19 -15, 1977 TI - Proceeding third US-USSR Joint symposium on congenital heat disease: U.S. department of health, education and welfare U1 - 616.1043, PY - 1977/// CY - Washington PB - U.S. Department of Health Education and Welfare ER -