13 ICA was held in Belgrade,Aug.24—31,1989.The ICA is the most importantevent on Acoustics,once every three years.701 People(with 62 accompanying persons)registered,coming from 34 nations.The largest group was from the host country,159 innumber,84 came from Japan,61 from France,54 from USA,51 from West Germany,39from Soviet Union,31 from Hungary,etc.There came 14 from China.The least numberwas from Africa,1.In the five-volume Proceedings were printed 510 papers,of which411 were presented on the main Congress in Belgrade,22 and 26,resp.on the SateliteSymposia at Zagreb(electroacoustics)and Dubrovnik(sea acoustics).Among the 510papers,16 were invited lectures,11 at main Congress,including one special lecture,2
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