(eBook PDF)Research Design: Qualitative, Quantitative, and Mixed Methods Approaches by John ,Creswell, David Creswell $15.99 Add to Cart
(eBook PDF)Engineering for Sustainable Communities by American Society of Civil Engineers , William E. Kelly , Ph.D. , P.E. , Barbara Luke , D.GE , and Richard N. Wright , NAE $19.90 Add to Cart
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