Chabad presented a book with more than 1,450 condolence letters to the family of a Virginia Tech professor and Holocaust survivor killed in a shooting rampage at the school.The notes collected through Chabad’s Web site, www.chabad.edu, came from as far away as India. Librescu was shot April 16 as he blocked the door to his classroom to give his students time to escape a roving gunman. He was the only Jew killed in the massacre. He was buried April 20 in Ra’anana, Israel. The Chabad on Campus National Foundation presented the books to Librescu’s sons Aryeh and Joseph in Israel, where they live.