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[32] DEMOGRAPHIC DIMENSIONS OF WORLD POLITICS [J]. SCIENCE, 1960, 131 (3414) : 1641 - 1647

[33] PROGESTATIONAL ACTIVITY OF ORALLY ADMINISTERED 17-ALPHA-ETHINYL-19-NORTESTOSTERONE [J]. ENDOCRINOLOGY, 1954, 54 (02) : 228 - 230

[34] HERTZ R, 1956, P SOC EXP BIOL MED, V91, P418

[35] INHOFFEN HH, 1938, CHEM BER, V71, P1024

[36] JADRIJEVIC D, 1956, P SOC EXP BIOL MED, V91, P38

[37] Jones Joseph M., 1962, DOES OVERPOPULATION

[38] JUNKMANN K, 1954, N-S ARCH EX PATH PH, V223, P244

[39] 19-NORSTEROIDE .4. UBER DIE REDUKTIVE ATHERSPALTUNG BEI 5ALPHA-HALOGEN-6BETA,19-OXIDO-STEROIDEN [J]. HELVETICA CHIMICA ACTA, 1963, 46 (04) : 1361 - &

[40] KINCL FA, 1963, ACTA ENDOCRINOL-COP, V42, P17

[31] GREEP RO, 1963, HUMAN FERTILITY POPU

[32] DEMOGRAPHIC DIMENSIONS OF WORLD POLITICS [J]. SCIENCE, 1960, 131 (3414) : 1641 - 1647

[33] PROGESTATIONAL ACTIVITY OF ORALLY ADMINISTERED 17-ALPHA-ETHINYL-19-NORTESTOSTERONE [J]. ENDOCRINOLOGY, 1954, 54 (02) : 228 - 230

[34] HERTZ R, 1956, P SOC EXP BIOL MED, V91, P418

[35] INHOFFEN HH, 1938, CHEM BER, V71, P1024

[36] JADRIJEVIC D, 1956, P SOC EXP BIOL MED, V91, P38

[37] Jones Joseph M., 1962, DOES OVERPOPULATION

[38] JUNKMANN K, 1954, N-S ARCH EX PATH PH, V223, P244

[39] 19-NORSTEROIDE .4. UBER DIE REDUKTIVE ATHERSPALTUNG BEI 5ALPHA-HALOGEN-6BETA,19-OXIDO-STEROIDEN [J]. HELVETICA CHIMICA ACTA, 1963, 46 (04) : 1361 - &

[40] KINCL FA, 1963, ACTA ENDOCRINOL-COP, V42, P17