TY  - BOOK
AU  - Baker,R.R.
TI  - Human sperm competition: copulation, masturbation, and infertility 
SN  - 0412454300 :
AV  - QP255 .B34
PY  - 1993///
CY  - London
PB  - Chapman and Hall
N1  - Duplicate of 94-72449
UR  - http://www.loc.gov/catdir/enhancements/fy1006/94144223-d.html
UR  - http://www.loc.gov/catdir/enhancements/fy1006/94144223-t.html
ER  -