Access Year:  From 1959 To 1969 | Publisher:  JSTOR 

Access Year:  From 2009 To Present | Publisher:  AMERICAN CHEMICAL SOCIETY 

Access Year:  From 2015 To Present | Publisher:  ACS PUBLICATION 

Access Year:  From 2011 To Present | Publisher:  AMERICAN CHEMICAL SOCIETY 

Access Year:  From 2015 To Present | Publisher:  ACS PUBLICATION