Understanding FORTRAN 77 & 90

This is a good book,an excellent read.I have many books in Fortran but i have not come across this type yet.The writing style is incredibly simple and straightforward.The authors talk in a very relaxed mode,somehow coaxing you to understanding.What more,it is written in modern style-Structured and Modular.If you ever have problems understanding other Fortran books,please try this one.In each chapter,the concluding sections on 'Odds and Ends' are invaluable.Chances are,you wont find these in other texts.However,the Fortran 90 components of the language are not explicitly highlighted as suggested by the title.