TY  - BOOK
AU  - GRUYS, P
TI  - Growth in Bupalus piniarius (Lepidoptera : Geometridae) in relation to larvel population density
U1  - 595.78 G94G 
PY  - 1970///
PB  - Wageningen,The Nethelands
KW  - LEPIDOPTERA
KW  - CATERPILLARS
KW  - LARVE -- INSECTS
ER  -