The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals ..
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Rating:IFS is the UK's leading independent economics research institute. We analyse and inform economic and policy decisions with academic rigour and absolute independence.
Rating:AGU is an international, nonprofit scientific association whose mission is to promote discovery in Earth and space science for the benefit of humanity.
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