The text discusses principles governing the practice of medicine across borders, emphasizing equivalence, protection, and nationality. It notes that many countries require foreign physicians to qualify for naturalized citizenship. Protection is seen as the most influential principle, with countries short of doctors relaxing immigration laws. However, relaxing barriers could lead to a concentration of doctors in wealthy areas, harming less developed regions. The text argues that the issue is central to international politics and that the medical profession should lead in addressing it, as medicine provides a strong link between people of different nationalities. It also mentions the European Common Market's potential impact on medical reciprocity. The text then reviews a booklet on the National Coal Board's Medical Service, detailing work on pneumoconiosis, occupational deafness, and stretcher carrying. It highlights the importance of proper training for first-aiders and the role of nurses in immunization programs. The booklet is recommended for occupational health professionals and students. The text then reviews a book on the doctor-patient relationship, emphasizing the psychological aspects of general practice. It discusses the challenges faced by general practitioners and the need for better training and understanding of patient interactions. The book is recommended for medical students, specialists, and general practitioners. Finally, the text announces upcoming conferences on occupational health and a symposium on inhaled particles, along with a symposium on color. It also includes a correction to a paper on industrial lead poisoning.The text discusses principles governing the practice of medicine across borders, emphasizing equivalence, protection, and nationality. It notes that many countries require foreign physicians to qualify for naturalized citizenship. Protection is seen as the most influential principle, with countries short of doctors relaxing immigration laws. However, relaxing barriers could lead to a concentration of doctors in wealthy areas, harming less developed regions. The text argues that the issue is central to international politics and that the medical profession should lead in addressing it, as medicine provides a strong link between people of different nationalities. It also mentions the European Common Market's potential impact on medical reciprocity. The text then reviews a booklet on the National Coal Board's Medical Service, detailing work on pneumoconiosis, occupational deafness, and stretcher carrying. It highlights the importance of proper training for first-aiders and the role of nurses in immunization programs. The booklet is recommended for occupational health professionals and students. The text then reviews a book on the doctor-patient relationship, emphasizing the psychological aspects of general practice. It discusses the challenges faced by general practitioners and the need for better training and understanding of patient interactions. The book is recommended for medical students, specialists, and general practitioners. Finally, the text announces upcoming conferences on occupational health and a symposium on inhaled particles, along with a symposium on color. It also includes a correction to a paper on industrial lead poisoning.