Update free-programming-books-langs.md (#11645)

* Update free-programming-books-langs.md

* Update free-programming-books-langs.md

* Update free-programming-books-langs.md

* Update free-programming-books-langs.md

* Update free-programming-books-langs.md

* Update free-programming-books-langs.md

Author: MrCyGuy

books/free-programming-books-langs.md

@@ -600,11 +600,13 @@ Books on general-purpose programming that don't focus on a specific language are
 ### COBOL
 
 * [COBOL Programming Fundamental](http://yusman.staff.gunadarma.ac.id/Downloads/files/33460/COBOL_Programming_Fundamental.pdf) (PDF)
+* [COBOL Programming Standards](https://www.tonymarston.net/cobol/cobolstandards.html) - A J Marston (HTML)
 * [Enterprise COBOL for z/OS documentation library](http://www-01.ibm.com/support/docview.wss?uid=swg27036733)
 * [GNU COBOL Programmers Guide](https://edoras.sdsu.edu/doc/GNU_Cobol_Programmers_Guide_2.1.pdf) - Gary L. Cutler (PDF)
 * [ILE COBOL Programmer's Guide](https://www.ibm.com/docs/de/ssw_ibm_i_74/pdf/sc092539.pdf) (PDF)
 * [Micro Focus: OO Programming with Object COBOL for UNIX (1999)](https://www.microfocus.com/documentation/object-cobol/oc41books/oppubb.htm) - MERANT International Ltd. (HTML)
 * [OpenCOBOL 1.1 - Programmer's Guide](http://open-cobol.sourceforge.net/guides/OpenCOBOL%20Programmers%20Guide.pdf) (PDF)
+* [Visual COBOL: A Developer's Guide to Modern COBOL](https://www.microfocus.com/media/ebook/visual_cobol_ebook.pdf) - Paul Kelly (PDF)
 
 
 ### CoffeeScript
@@ -686,6 +688,7 @@ Books on general-purpose programming that don't focus on a specific language are
 * [Essential Pascal Version 1 and 2](http://www.marcocantu.com/epascal/) - M. Cantù
 * [Expert Delphi](https://www.packtpub.com/free-ebooks/expert-delphi) - Paweł Głowacki (Packt account *required*)
 * [Modern Object Pascal Introduction for Programmers](https://github.com/michaliskambi/modern-pascal-introduction) - Michalis Kamburelis ([AsciiDoc](https://github.com/michaliskambi/modern-pascal-introduction/blob/master/modern_pascal_introduction.adoc#logical-relational-and-bit-wise-operators), [HTML](https://castle-engine.io/modern_pascal_introduction.html), [PDF](https://castle-engine.io/modern_pascal_introduction.pdf))
+* [Start Programming using Object Pascal](https://code.sd/startprog/StartProgUsingPascal.pdf) - Motaz Abdel Azeem (PDF)
 
 
 ### DTrace
@@ -949,6 +952,7 @@ Books on general-purpose programming that don't focus on a specific language are
 * [CSS Transition vs CSS animation](https://www.freecodecamp.org/news/css-transition-vs-css-animation-handbook/) - Oluwatobi Sofela
 * [Dive Into HTML5](http://diveinto.html5doctor.com) - Mark Pilgrim ([PDF](http://mislav.net/2011/10/dive-into-html5/))
 * [DOM Enlightenment](http://domenlightenment.com) - Cody Lindley (HTML)
+* [Enduring CSS](https://ecss.benfrain.com/preface.html) - Ben Frain (HTML)
 * [Essential CSS](https://www.programming-books.io/essential/css/) - Krzysztof Kowalczyk, StackOverflow Contributors
 * [Essential HTML](https://www.programming-books.io/essential/html/) - Krzysztof Kowalczyk, StackOverflow Contributors
 * [Essential HTML Canvas](https://www.programming-books.io/essential/htmlcanvas/) - Krzysztof Kowalczyk, StackOverflow Contributors