Yanev, I. Importance of the breathing manoeuvre in detecting mild air flow obstructions in a lung function screening. Plovdiv: 1992 39-42,.
Yanev, I. Importance of the breathing manoeuvre in detecting mild air flow obstructions in a lung function screening. Plovdiv: 1992 39-42,.
Yanev, I. (1992) Importance of the breathing manoeuvre in detecting mild air flow obstructions in a lung function screening, Plovdiv: 39-42,.
Yanev, I. (1992). Importance of the breathing manoeuvre in detecting mild air flow obstructions in a lung function screening. Folia Medica, 34 (2), 39-42.
Yanev I. Importance of the breathing manoeuvre in detecting mild air flow obstructions in a lung function screening. Folia Medica. 1992; 34(2): 39-42.
