Doesn't suit? No problem! You can return within 30 days
You won't go wrong with a gift voucher. The gift recipient can choose anything from our offer.
30-day return policy
Niniejsza kiazka zawiera szesc rzdzialow: Od Shapiro do Trosha; Nowe rozwiazanie; Trzy i wiecej skladnikow; Nierownosc Janousa; Problem Kelloga; Nierownosc Erdosa.