[book] Introduction to Riemann Surfaces + Introduction to Modern Algeb

Introduction to Riemann Surfaces [Hardcover]
George Springer
http://www.amazon.com/Introduction-Riemann-Surfaces-Chelsea-Publishing/dp/0821831569/

Introduction to Modern Algebra [Hardcover]
Neal H. McCoy
http://www.amazon.com/Introduction-Modern-Algebra-Neal-McCoy/dp/0205102670

Total $30

Cash only. Can pick up at Palo Alto or Mountain View. Good condition. Can check the books before paying.