Laurence D. Cohen, 64, of Sanibel, Fla., formerly of Glastonbury, died August 27.  Born in Chicago, he was the son of Sydney and Bernice (Glickson) Cohen.  He is survived by his wife, Janice Udesen Cohen of Sanibel; his sister Barbara (Steven) Pollack of Washington Crossing, Penn.; his nephew Benjamin Pollack of Budd Lake, N.J.; and cousins Lynn (Bruce) Kushner, Jerry (Kathy) Rafal, Marc (Anne) Rafal, Stephanie (Ron) Levin, Sharon (Steve) Lanier, Stacey (Keith) Griffith, Bennett (Holly) Cole.