Description:I have in my hands Modern Spanish Grammar Workbook 2nd edition ISBN: 0415273064
which, according to the back cover, goes with Modern Spanish Grammar 2nd edition ISBN: 0415273048
I have in my hands Modern Spanish Grammar A Practical Guide 2nd edition ISBN: 0415273048
which, according to the back cover, goes with Modern Spanish Grammar Workbook 2nd edition ISBN: 0415273064
I can't explain the different ISBN of this book:
Modern Spanish Grammar A Practical Guide 2nd edition
ISBN-10: 041527303X
ISBN-13: 978-0415273039
I wonder what workbook it matches?