Matches in DBpedia 2014 for { ?s ?p <http://books.google.com/books?id=iyQDAAAAMBAJ&pg=RA1-PA144&dq=popular+science+1949+%22it+takes+years%22&hl=en&ei=hPrgTPjnAoyinweoqqzPDw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CDEQ6AEwAA#v=onepage&q&f=true> . }
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