共 32 条
[1]
DOWNS-SYNDROME - RECENT TRENDS IN THE UNITED-STATES
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1981, 246 (07)
:758-760
[2]
BARG MS, PUBLIC HLTH REP
[3]
BOGUE DJ, 1969, PRINCIPLES DEMOGRAPH, P734
[4]
Chapman D. G., 1951, U CALIFORNIA PUBL ST, V1, P131
[5]
SURVEY OF MONGOLOID BIRTHS IN VICTORIA, AUSTRALIA, 1942-1957
[J].
AMERICAN JOURNAL OF PUBLIC HEALTH AND THE NATIONS HEALTH,
1962, 52 (05)
:813-+
[6]
COLLMANN RD, 1969, J MENT DEFIC RES, V13, P13
[7]
CORMACK R M, 1968, Oceanography and Marine Biology an Annual Review, V6, P455
[8]
Hook E B, 1977, Birth Defects Orig Artic Ser, V13, P123