Even the author said that this book was not a dictionary, but rather a vocabulary list for the university course she taught. And that was sometime in the 1950's, if I recall correctly. In addition, Cambridge University Press have a bloody nerv ceontinuing to sell this book after 60 or so years, and the recent editions are obviously merely a digital scan of the original typeset edition, with the Persian printing being quite atrocious and often illegible. If you want a great Farsi dictionary, Google Aryanpour (or Aryanpoor) or go to [...] and look for dictionaries by this author and published by Amir Kabir in Iran (at Iranibooks you'll have to register to navigate the site). These dictionaries are excellent, comprehensive, clearly printed, and buying from Iranibooks I have always received prompt delivery, no hidden fees, and secure payment through a US based site. My personal favorites are the Persian/English Pocket Dictionary, and the English/Persian Pocket Dictionary (Farhang-e Jibi... etc).