I bought this a long time ago, but it was too difficult for me, so the contents are clean. A reference book specifically for calculation problems on the weather forecaster exam. - Title: How to Solve Calculation Problems for the Weather Forecaster Exam, 3rd Edition - Editor: Meteorological Business Support Center - Edition: 3rd Edition - Contents: A study reference book specializing in calculation problems Please understand that this item has been stored at home and has been inspected by an amateur.