| Revised editions appeared throughout the twentieth century to keep it up to date with changes in English usage. |
| Wasiolek said the school has not done any kind of survey on Adderall usage to determine whether the policy has made an impact. |
| Because of its efficacy and widespread clinical usage, amphetamine has been the standard anorexigenic drug for some time. |
| Less dense usage is suggested for north Ayrshire, Renfrewshire, the Clyde Valley and eastern Dumfriesshire. |
| The usage of coin weights, especially glass ones, goes back to Ptolemaic and Byzantine times. |
| This usage of the word is the origin of the modern concept of Germanic languages, but it was not defined strictly by language. |
