This is a vintage UNESCO Source Book for Science Teaching, originally published in 1956. This edition appears to be a later impression from 1957. It is a softcover paperback, printed in the Netherlands. The book covers various subjects related to science education, making it an excellent historical reference for educators, students, and collectors interested in the evolution of science teaching methodologies. Despite its age, it offers valuable insights into fundamental scientific principles and teaching approaches of the mid-20th century. The cover shows wear consistent with age and use, as detailed in the images.