Each book in this series focuses on a type of simple mechanism and examines how it is used to make different toys work. This book examines pulleys and uses simple language and labelled photographs to explain the scientific principles behind their use.
Dieser Download kann aus rechtlichen Gründen nur mit Rechnungsadresse in A, B, BG, CY, CZ, D, DK, EW, E, FIN, F, GR, HR, H, IRL, I, LT, L, LR, M, NL, PL, P, R, S, SLO, SK ausgeliefert werden.