There are times when you should request copies of your records: 1  Permanent Change of Station. 2  Deploying. 3  Retiring.
0. EXPERT ANSWER. Double coincidence of wants refers to a situation in a barter system where the goods or services offered by a seller are exactly the same as that required by a buyer and vice versa.
Double first cousin. 192,101 pages on this wiki. Double first cousins arise when two siblings reproduce with another set of siblings and the resulting children are related to each other through both parents ' families.