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ABOUT THE FUNCTIONAL SPIROGRAM VALUATION OF PULMONARY VENTILATION BY MEANS OF NOMOGRAMS
Iv. Kirin and A. F. Andreev
I. P. PAVLOV HIGHER MEDICAL INSTITUTE OF PLOVDIV, BULGARIA CHAIR ОГ PATHOLOGICAL PHYSIOLOGY
HIGHER INSTITUTE OF FOOD, WINE AND TOBACCO INDUSTRY CHAIR OF MII.K AND DAIRY PRODUCE TECHNOLOGY
