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In Memoriam
| Jerzy Wehr | |
| Editorial Committee of Archives of Acoustics | 75-77 |
Research Papers
| Opening transients and the quality of classic guitars | |
| A. JAROSZEWSKI, A. RAKOWSKI, J. ŻERA | 79-84 |
| Effects of aircraft noise on the mental functions of schoolchildren | |
| Zbigniew KOSZARNY | 85-105 |
| Variations of the fundamental frequency in polish voiced consonants | |
| Olga MATUSZKINA | 105-119 |
| A study of the underwater acoustic disturbances produced by a ship propeller | |
| Eugeniusz KOZACZKA | 121-139 |
Chronicle
| XXIV-th Open Seminar On Acoustics | |
| Gustaw BUDZYŃSKI | 141-149 |