- #1
yicong2011
- 75
- 0
My friend recommend this book to me.
Actually, I don't have enough time to read Goldstein. But this is book is not so thicker as Goldstein's.
May I use this book as a substitution?
Actually, I don't have enough time to read Goldstein. But this is book is not so thicker as Goldstein's.
May I use this book as a substitution?