The authoritative instrument for the distribution of all forms of official IRS tax guidance is the Internal Revenue Bulletin (IRB), a weekly collection of these and other items of general interest to the tax professional community.
perfidy definition: The definition of a perfidy is a deliberate betrayal. (noun) An example of a perfidy is spreading a best friend's secrets all over town....
Percale, or percalcos, is a closely woven plain-weave fabric often used for bed covers. Percale has a thread count of about 200 or higher and is noticeably tighter than the standard type of weave used for bed-sheets. It has medium weight, is firm and smooth with no gloss, and warps and washes very well.