Mathematics: Macmillan Science Library. 4 Volume Set by Barry Max Brandenberger English | December 14, 2002 | ISBN: 0028655613 | 872 pages | PDF | 45 Mb
A Concise Handbook of Mathematics, Physics, and Engineering Sciences by Andrei D. Polyanin, Alexei I. Chernoutsan English | October 18, 2010 | ISBN: 143980639X | 1125 pages | PDF | 22 Mb
The Banach-Tarski Paradox (Encyclopedia of Mathematics and its Applications) by Grzegorz Tomkowicz, Stan Wagon 2016 | ISBN: 1107042593 | English | 360 pages | PDF | 9 MB
Abhaya Indrayan, Martin P. Holt, "Concise Encyclopedia of Biostatistics for Medical Professionals" 2016 | ISBN: 1482243873 | English | 728 pages | PDF | 16 MB
CRC Concise Encyclopedia of Nanotechnology by Boris Ildusovich Kharisov and Oxana Vasilievna Kharissova English | 2015 | ISBN: 1466580348 | 1212 pages | PDF | 407 MB