TY  - BOOK
AU  - Friedman,M.E.
TI  - Preservation of Bull Semen at Sub-Zero Temperatures
AV  - SF 
PY  - 2011///
PB  - Project Gutenberg
KW  - Frozen semen
KW  - Cattle -- Artificial insemination
N1  - Public domain in the USA; Electronic text
UR  - http://www.gutenberg.org/ebooks/37041
ER  -