TY - BOOK AU - Volklein Helmut TI - Groups as galois groups : an introduction SN - 9.78E+12 U1 - 512.3 PY - 2009/// CY - New York PB - CUP KW - Inverse galois theory UR - http://ebooks.cambridge.org/ebook.jsf?bid=CBO9780511471117 ER -