The sections Universe and Space, Earth, Living World, Human Body, and Science and Technology were excellent refreshers of primary and secondary school education.
Beliefs and Customs had errors. Arts and Media was informative, even if outdated. Sports was of marginal utility.
The sections Transportation, Communications, and Industry and International World had some useful information, but was also outdated. It was a depressing celebration of the destruction and murder of the planet. The maps were were difficult to read.
The section on History could have been better, and it had the usual biases I have come to expect.