Nguyen Van Hieu. Lectures on the Theory of Unitary Symmetry of Elementary Particles (Lektsii po teorii unitarnoy simmetrii elementarnykh chastits), 1967. First Russian edition.

Нгуен Ван Хьеу.
Лекции по теории унитарной симметрии элементарных частиц.
Москва : Атомиздат, 1967.
344 с. : ил. ; Обычный формат. Твердый издательский переплет. Тираж 4 000 экз.
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Nguyen Van Hieu.
Lectures on the Theory of Unitary Symmetry of Elementary Particles.
Moscow : Atomizdat, 1967.
344 pp. : ill. ; Regular format. Hardcover. Edition of 4,000 copies. 

This 1967 volume is a seminal theoretical monograph written by the distinguished Vietnamese physicist Nguyen Van Hieu, a prominent figure at the Joint Institute for Nuclear Research (JINR) in Dubna. Published during a revolutionary era in particle physics when the quark model and symmetry groups were being established, the text provides a deep dive into the internal logic of the $SU(3)$ and $SU(6)$ groups, including the arrangement of multiplets and the classification of hadrons. Based on a series of lectures delivered by the author, the book masterfully bridges the gap between abstract group theory and experimental high-energy physics. Nguyen Van Hieu, who later became the President of the Vietnam Academy of Science and Technology, was celebrated for his ability to clarify the most complex aspects of relativistic quantum mechanics and unitary symmetry, making this first Russian edition a vital resource for Soviet theoretical physicists.
Across its 344 pages, the book covers foundational topics such as the Eightfold Way, mass formulas, and the application of symmetry to weak and electromagnetic interactions. Published by Atomizdat, the primary state scientific press for nuclear research, the volume reflects the rigorous academic standards of the late 1960s. Despite a print run of 4,000 copies, this specialized work has become a significant rarity, as it documents the crucial transition period toward the modern Standard Model. For bibliophiles, historians of science, and collectors of physics literature, this 1967 Moscow imprint is a vital primary source, representing the international collaboration in the "Golden Age" of Soviet theoretical science and the profound influence of the Dubna school of physics.