Can you suggest some reference textbooks for practical thermodynamics applications in cryogenic fields? I need textbooks with cryogenics calculations and examples, dimensioning procedures, second principle applications in cryogenics, heat load calculations, cryogenic pump application, etc.
Do such books exist? Does any similar source of information exist?
CSA Archive 
I can suggest “Experimental Techniques in Low Temperature Physics”, G.K. White and P.J. Meeson, Oxford Science Publications.
Besides the book suggested by Michael which contains a lot of information about (magnet-)cryostat design and very-low-temperature refrigeration, I would suggest the book “Cryogenic Systems” by R.F. Barron for in depth calculations of larger systems.
Have also a look at my compilation of cryogenic bibliography at
http://cern.ch/goran.perinic/bibliography.htm
Even though I have not updated it in some time.
The recently published (2006) book, “Experimental techniques for low-temperature measurements: cryostat design, material properties, and superconductor critical-current testing,” by Jack Ekin has, among other things, a tremendous compilation of data for cryogenic design. In addition, the book now has a website (www.researchmeasurements.com) that contains:
• Updated data tables in electronic form that can be easily searched.
• Enlarged pdf files of figures for easy reading and data interpolation
• Errata
Since it seems you are looking for practical reference book, I would suggest “Handbook of Cryogenic Engineering” from J.G. Weisend II.
From my point of view, it is a kind of bible for cryogenic technical designs.
In addition to a list of books, CSA has a larger list of cryogenic references in a document at the following page: http://www.cryogenicsociety.org/book_corner/.