Edit. Ladybird Books Ltd., 1974 England. 8º (18×12 cm) 48 págs. Cartoné ilustrado. Cubierta algo rozada en lomo. Buen estado general. «The subject matter and vocabulary have been selected with expert assistance, and the brief and simple text is printed in large, clear type. Children’s questions are anticipated and facts presented in a logical sequence. Where possible, the books show what happened in the past and what is relevant today. Special artwork has been commisioned to set a standard rarely seen in books for this reading age and at this price. Full-colour illustrations are on all 48 pages to give maximum impact and provide the extra enrichment that is the aim of al Ladybird Leaders.»