@article{
journal={Acarologia},
title={Effect of forest fertilization on the spruce spider mite Oligonychus ununguis (Jacobi) (Acarina, Tetranychidae)},
volume={32},
number={2},
pages={139-143},
year={1991},
issn={0044-586X, 2107-7207},
publisher={Les Amis d'Acarologia},
author={Loyttyniemi, K. and Heliovaara, K.},
url={https://www1.montpellier.inrae.fr/CBGP/acarologia/article.php?id=2433},
keywords={Oligonyghus ununguis; Pigea abies; nitrogen; pest control; Finland
},
language={English}
}