TY  - BOOK
AU  - Southwood,T.R.E.
TI  - Ecological methods: with particular reference to study of insect populations 
SN  - 0470264101
U1  - 591.5028 
PY  - 1978///
CY  - London
PB  - Chapman and Hall ; New York : J. Wiley, 
KW  - ECOLOGIA
KW  - POBLACION DE INSECTOS
ER  -