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The Library believes that the production of a detailed and comprehensive guide to holdings is an essential first step in breaking down the barriers which may have inhibited access by Aboriginal and Torres Strait Islanders to significant components of what is an important part of their historical and cultural record . Most Member States make significant use , though to varying degrees , of probabilistic safety analysis ( PSA ) studies , thus demanding consistent approaches and quality , and necessitating regulatory review . International students and scholars in the United States make significant contributions to campus learning , community diversity , and the economy . " Considered among the world 's leading awards for lifetime professional achievement , the Kyoto Prizes recognize significant contributions to the scientific , cultural , and spiritual development of mankind . Military units stationed far from the United States encounter significant challenges when communicating and transporting logistics requirements . However , less than one percent of new homes built in the United States incorporate significant passive solar features .