SECULAR CHANGES IN DIZYGOTIC TWINNING RATES

[1] EASE OF CONCEPTION IN MOTHERS OF TWINS [J]. SOCIAL BIOLOGY, 1971, 18 (01): : 18 - &

[2] DO CONCEPTION DELAYS EXPLAIN SOME CHANGES IN TWINNING RATES [J]. ACTA GENETICAE MEDICAE ET GEMELLOLOGIAE, 1970, 19 (1-2): : 30 - +

[3] DEMOGRAPHIC CHARACTERISTICS OF MULTIPLE BIRTHS IN HUNGARY [J]. ACTA GENETICAE MEDICAE ET GEMELLOLOGIAE, 1971, 20 (03): : 301 - &

[4] Grabill Wilson H., 1958, FERTILITY AM WOMEN

[5] HEUSER RL, 1967, PHS1000 PUBL

[6] JEANNERET O, 1962, AM J HUM GENET, V14, P410

[7] CHANGING PATTERNS OF FERTILITY IN UNITED-STATES [J]. SOCIAL BIOLOGY, 1970, 17 (04): : 302 - &

[8] CHANGING INCIDENCE OF TWINNING IN SCOTLAND IN 1939-1968 [J]. ACTA GENETICAE MEDICAE ET GEMELLOLOGIAE, 1970, 19 (1-2): : 26 - +

[9] PARKES AS, 1969, J REPROD FERT S6, P105

[10] DIFFERENTIAL FERTILITY IN THE UNITED STATES 1900 TO 1952 [J]. AMERICAN SOCIOLOGICAL REVIEW, 1954, 19 (05) : 549 - 561

[1] EASE OF CONCEPTION IN MOTHERS OF TWINS [J]. SOCIAL BIOLOGY, 1971, 18 (01): : 18 - &

[2] DO CONCEPTION DELAYS EXPLAIN SOME CHANGES IN TWINNING RATES [J]. ACTA GENETICAE MEDICAE ET GEMELLOLOGIAE, 1970, 19 (1-2): : 30 - +

[3] DEMOGRAPHIC CHARACTERISTICS OF MULTIPLE BIRTHS IN HUNGARY [J]. ACTA GENETICAE MEDICAE ET GEMELLOLOGIAE, 1971, 20 (03): : 301 - &

[4] Grabill Wilson H., 1958, FERTILITY AM WOMEN

[5] HEUSER RL, 1967, PHS1000 PUBL

[6] JEANNERET O, 1962, AM J HUM GENET, V14, P410

[7] CHANGING PATTERNS OF FERTILITY IN UNITED-STATES [J]. SOCIAL BIOLOGY, 1970, 17 (04): : 302 - &

[8] CHANGING INCIDENCE OF TWINNING IN SCOTLAND IN 1939-1968 [J]. ACTA GENETICAE MEDICAE ET GEMELLOLOGIAE, 1970, 19 (1-2): : 26 - +

[9] PARKES AS, 1969, J REPROD FERT S6, P105

[10] DIFFERENTIAL FERTILITY IN THE UNITED STATES 1900 TO 1952 [J]. AMERICAN SOCIOLOGICAL REVIEW, 1954, 19 (05) : 549 - 561