TY  - BOOK
AU  - Daniels, Douglas
AU  - Nestel, Barry
TI  - Defining critical mass: : the case in animal research
U1  - 636.072 
PY  - 1993///
CY  - Ottawa
PB  - International Development Research Centre
KW  - GanaderÃ­a
KW  - InvestigaciÃ³n
KW  - Costos
ER  -