Ecology of chronic nonspecific respiratory diseases: Proceedings of the international symposium; editors, Brzezinski, Z., Kopczynski, J. and Sawicki,
Ecology of chronic nonspecific respiratory diseases: Proceedings of the international symposium; editors, Brzezinski, Z., Kopczynski, J. and Sawicki,
- Warsaw (Poland) State Institute of Hygiene, 1972
- 239p.
Air Pollution-congresses
Bronchitis-congresses
Ecology-congresses
Occupational Diseases-congresses
Respiratory Tract Diseases-congresses
Respiratory Tract Infections-congresses
WF 140: N72E: INT
Air Pollution-congresses
Bronchitis-congresses
Ecology-congresses
Occupational Diseases-congresses
Respiratory Tract Diseases-congresses
Respiratory Tract Infections-congresses
WF 140: N72E: INT