By Π£ΡΠΏΠ΅Π½ΡΠΊΠΈΠΉ ΠΠ»Π°Π΄ΠΈΠΌΠΈΡ ΠΠ½Π΄ΡΠ΅Π΅Π²ΠΈΡ
ΠΠ½ΠΈΠ³Π° ΠΏΠΎΡΠ²ΡΡΠ΅Π½Π° ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΠΊΠ΅.
The book is dedicated to mathematics.
US: temporary delays β postal services aligning new import rules, 
Europe: 1β2 weeks, π Worldwide: 1β4 weeks βοΈ