na INLIS000000000000158 N 0010-0317000156 A Problem-Solving Approach to Intermediate Algebra Keedy, Mervin Laverne 6th ed New York : Addison-Wesley 1991 xxiv, 643 (12)hlm. 28 cm 0201196956 512.9 Kee i 512.9 ALGEBRA-STUDY AND TEACHING 245088112 245088112