Science Books, Biology Books, Chemistry Books, Physics Books, Technology Books, Research Books, Engineering Books, Nature Books, Education Books, Space Books, Scientist Books, Facts Books, Nasa Books, Stem Books, Astronomy Books, Universe Books, Medicine Books, Knowledge Books, Maths Books, Earth Books, Laboratory Books, Cosmos Books, Microbiology Books, Astrophysics Books, Innovation Books, School Books, Science Facts Books, Student Books, Biotechnology Books and many more.
About PDF Files
Portable Document Format (PDF) is a file format developed by Adobe in 1993 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. Based on the PostScript language, each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, vector graphics, raster images and other information needed to display it.
About EPUB Files
EPUB is an e-book file format that uses the “.epub” file extension. The term is short for electronic publication and is sometimes styled ePub. EPUB is supported by many e-readers, and compatible software is available for most smartphones, tablets, and computers.