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sectioning - How to add an extra level of sections with headings below \ subsubsection - TeX - LaTeX Stack Exchange
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horizontal alignment - How to center section when using \titleformat{\ section}? - TeX - LaTeX Stack Exchange
![In 3-D and Full Color: A Stereoscopic Atlas of Human Anatomy. Section 5, The Abdomen (140 views; 295 pp., 2 vols., $16.50); Section 6, The Pelvis (154 views; 320 pp., 2 vols., $19.50). David L. Bassett. Sawyer's, Portland, Ore., 1961. | Science In 3-D and Full Color: A Stereoscopic Atlas of Human Anatomy. Section 5, The Abdomen (140 views; 295 pp., 2 vols., $16.50); Section 6, The Pelvis (154 views; 320 pp., 2 vols., $19.50). David L. Bassett. Sawyer's, Portland, Ore., 1961. | Science](https://www.science.org/cms/10.1126/science.136.3515.526.c/asset/66f3dafa-1067-404e-896a-a8cc0f92592f/assets/science.136.3515.526.c.fp.png)