Annual report of clinical research activities,
U.S. Department of health and human services, 1999, 227 p..
.
Annual report of clinical research activities.
б. м.: U.S. Department of health and human services, 1999, 227 p..
(1999)
Annual report of clinical research activities,
б. м.: U.S. Department of health and human services, 227 p.
(1999).
Annual report of clinical research activities. October 1, 1998 to september 30, 1999. б. м.: U.S. Department of health and human services, 227 p..