Ban on pavement sealant lowered levels of potentially harmful compounds in lake — ScienceDaily
source : http://www.sciencedaily.com/releases/2014/06/140618122253.htm
source : http://www.sciencedaily.com/releases/2014/06/140618122253.htm
source : http://www.sciencedaily.com/releases/2014/05/140530142414.htm
source : http://www.sciencedaily.com/releases/2014/05/140530142416.htm
source : http://www.sciencedaily.com/releases/2014/05/140530154107.htm
source : http://www.sciencedaily.com/releases/2014/05/140531132310.htm
source : http://www.sciencedaily.com/releases/2014/05/140531154837.htm
source : http://www.sciencedaily.com/releases/2014/05/140531090724.htm
source : http://www.sciencedaily.com/releases/2014/05/140530142412.htm
source : http://www.sciencedaily.com/releases/2014/05/140530133210.htm
source : http://www.sciencedaily.com/releases/2014/05/140530133218.htm