000 01037 a2200337 4500
005 20250512003359.0
264 0 _c19890321
008 198903s 0 0 eng d
022 _a0002-922X
040 _aNLM
_beng
_cNLM
100 1 _aKulin, H E
245 0 0 _aThe onset of sperm production in pubertal boys. Relationship to gonadotropin excretion.
_h[electronic resource]
260 _bAmerican journal of diseases of children (1960)
_cFeb 1989
300 _a190-3 p.
_bdigital
500 _aPublication Type: Journal Article
650 0 4 _aAdolescent
650 0 4 _aChild
650 0 4 _aFollicle Stimulating Hormone
_xurine
650 0 4 _aHumans
650 0 4 _aLuteinizing Hormone
_xurine
650 0 4 _aMale
650 0 4 _aPuberty
650 0 4 _aSpermatogenesis
650 0 4 _aSpermatozoa
650 0 4 _aUrine
700 1 _aFrontera, M A
700 1 _aDemers, L M
700 1 _aBartholomew, M J
700 1 _aLloyd, T A
773 0 _tAmerican journal of diseases of children (1960)
_gvol. 143
_gno. 2
_gp. 190-3
999 _c2498745
_d2498745