Research methods for promotion of lung health :
Research methods for promotion of lung health : A guide to protocol development for low-income countries
- París, Fra. : OPS, 2001.
- 137 p.
2-914365-06-3
Investigación - Metodos--Tuberculosis
001.42 / R432
2-914365-06-3
Investigación - Metodos--Tuberculosis
001.42 / R432