As a precious metal, platinum tends to vary in price with the value of the dollar and the state of the stock market. […] It also depends on the success of the Russian wheat crop. Russia is one of the … Continue reading
În sfîrșit am pus mîna pe ea! A fost o vînătoare frumoasă… și lungă! William Crawford, The Keepers of Light: A History and Working Guide to Early Photographic Processes, Morgan & Morgan, 1980. ISBN: 0871001586.
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