TY  - BOOK
AU  - Helle, W
AU  - Sabelis, M.W.
TI  - Spider mites vol 1B: heir biology, natural enemies, and control 
SN  - 0444423745
U1  - 632.6542 22
PY  - 1985///
CY  - Amsterdam
PB  - Elsevier
KW  - Entomology
KW  - Spider mites
KW  - Control
N1  - Includes bibliographical references and index
ER  -