title: [IMPROVED REGISTRATION TECHNIC IN SPIROGRAPHIC INSTRUMENTS AS A CONTRIBUTION TO THE STANDARDIZATION OF RESEARCH METHODOLOGY].
mesh_terms: D004864:Equipment and Supplies; D012015:Reference Standards; D012107:Research Design; D013147:Spirometry
keywords: EQUIPMENT AND SUPPLIES; SPIROMETRY
vernacular_title: VERBESSERTE REGISTRIERTECHNIK BEI SPIROGRAPHISCHEN GERAETEN ALS BEITRAG ZUR STANDARDISIERUNG DER UNTERSUCHUNGSMETHODIK.