Since it is a 12 digit number, there are chances of mistakes in day to day life. However, ISO has introduced the check digit, using which one can identify the correctness of the ISIN number. The check digit helps in identifying the errors in previous 11 bits.
Helen Adams Keller (June 27, 1880 â June 1, 1968) was an American author, political activist, and lecturer.
From the PEOPLE Archive: Inside Patty Duke's Life and 'Heartbreaking' Youth as a Child Star. Patty Duke, best known as Helen Keller in the 1962 film The Miracle Worker and for headlining her own sitcom, has died, She was 69. In 1985, just ahead of her 40th birthday, the actress sat down with PEOPLE to discuss love, career and her troubled past.