Ballester, F., Saez, M., Perez-Hoyos, S., Iniguez, C., Gandarillas, A., Tobias, A., . . . Tenias, J. (2002). The EMECAM project: A multicentre study on air pollution and mortality in Spain: combined results for particulates and for sulfur dioxide. BMJ Group.
Dyfyniad Arddull ChicagoBallester, F., et al. The EMECAM Project: A Multicentre Study On Air Pollution and Mortality in Spain: Combined Results for Particulates and for Sulfur Dioxide. BMJ Group, 2002.
Dyfyniad MLABallester, F., et al. The EMECAM Project: A Multicentre Study On Air Pollution and Mortality in Spain: Combined Results for Particulates and for Sulfur Dioxide. BMJ Group, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.