• Walo Al Walo from volgograd state technical university asked on 7th February 2018

    nothing working

    all video do not work i dont know where the broplem
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  • dodji cohovi from San Jose State University asked on 9th November 2014

    The quality of t the videos

    wI don't know if it's in part part I have realized that almost all the videos that I try to vie are not of good quality is the there anyways to fix this? Thank you.
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Chemical Engineering Process Design Decisions and Project Economics
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