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The noise which exceeds 60 decibels occurs in approx. 21 per cent of the whole area of Poland. It has been estimated that approx. 33 per cent of the population, that is 12.5 million people, is endangered by the influence of the overnormative noise. The article deals with the main sources and kinds of noise and vibrations.
The following problems are dealt with: traditions of the preservation of nature, ecological instructions of Mao Tse Tung, achievements and defeats in the field of the preservation of nature and the demographic troubles facing the Chinese People's Republic.
The following problems have been discussed: occurrence and role of the lactic fermentation bacteria, their antibacterial properties, ability to lower the contents of cholesterol, antineoplastic effect and utilization in combatting stoutness.
The first part of the reminiscences of the outstanding natural historian, Władysław Szafer, the pioneer of the preservation of nature in Poland is given. Numerous anegdotes from the times when Professor Szafer was at the Jagiellonian University are presented.
Delineation and development of a protective zone are substitute means of the preservation of nature. Putting a building object into use without delineation of such a zone can be an offence by virtue of the act of the protection and shaping of environment.
В статье дается характеристика государственных заповедников в Мексике, а также их главные проблемы. Одной из них является административное подчинение парков ресорту сельского хозяйства, что создает многие конфликтные ситуации.
On the occasion of the AURA fifteenth anniversary the circumstances of the origin of this periodical and the work on its first issues are presented. The contribution of many by now late authors and collaborators of AURA is recollected.
Обсуждаются самые важные мероприятия профилактического характера, которые имеют в виду охрану природной среды здравниц в Польше. Главным вопросом должна быть охрана залежей целебных вод минеральных, которым больше всего угрожает интенсивная урбанизация, а также сельское хозяйство.
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