Dr. Alla Poznyak of Worcester, Mass., has died. She was predeceased by her husband of 75 years, Semyon Kalnitsky. Born in Minsk, Belarus on December 16, 1925, she was the daughter of  Semyon and Vera Poznyak. She is survived by her daughters Marina and Elena; granddaughters Victoria, Vera, and Sasha; and six great-grandchildren.