8/19/2019 REFRAT1

http://slidepdf.com/reader/full/refrat1 1/6

8/19/2019 REFRAT1

http://slidepdf.com/reader/full/refrat1 2/6

8/19/2019 REFRAT1

http://slidepdf.com/reader/full/refrat1 3/6

8/19/2019 REFRAT1

http://slidepdf.com/reader/full/refrat1 4/6

8/19/2019 REFRAT1

http://slidepdf.com/reader/full/refrat1 5/6

8/19/2019 REFRAT1

http://slidepdf.com/reader/full/refrat1 6/6