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2135739
2135739
http://dx.doi.org/10.2307/2135739
Levels of sexual activity among adolescent males in the United States.
P356
Q39245830-67792E09-FCDB-4F91-9A2C-99CBF7E9F16F
P356
2135739
http://dx.doi.org/10.2307/2135739