PT Journal AU Malmberg, P Rask-Andersen, A TI Natural and adaptive immune reactions to inhaled microorganisms in the lungs of farmers. SO Scandinavian Journal of Work, Environment & Health PD VL PY 1988 BP 68 EP 71 IS 1 WP https://www.sjweh.fi/show_abstract.php?abstract_id=1970 SN 0355-3140 ER