General education -- Textbooks. General education -- Study and teaching (Secondary) -- China -- Hong Kong. Youth -- China -- Hong Kong -- Conduct of life. Interpersonal relations in adolescence -- China -- Hong Kong.

Photographic errors. Creative thinking. Creation (Literary, artistic, etc.) Errors -- Humor. Creation (Literary, artistic, etc.) -- Humor.

Spies -- United States -- Biography. Spies -- Russia (Federation) -- Moscow -- Biography. Engineers -- Soviet Union -- Biography. Aeronautics -- Research -- Soviet Union -- History. Espionage, American -- Soviet Union -- History.

Women -- Finance, Personal. Working mothers -- Finance, Personal. Families -- Economic aspects. Work and family. Career development.