11.   A handful of companies had installed on-demand printing machines that spat out single copies of paperback books on request.

12.   A single copy of the code can be cloned onto an infinite number of PCs with minimal effort and expense.

13.   Even one whose published book never gets reviewed or sells a single copy can at least claim that title.

14.   I wanted to go from newsstand to newsstand and buy up every single copy of the daily containing the unkind evaluation of my novel.

15.   In these diseases, people with a single copy of the mutated gene are healthy.

16.   Individuals with a single copy show no sign of premature aging or other symptoms.

17.   Instead, Muse X prints a single copy of the work.

18.   Increases in single copy and home delivery charges are being imposed by many newspapers across the country and rates charged to advertisers are being increased as well.

19.   It said the feature could also be used to avoid piracy by preventing a single copy of a software program from being installed on several machines.

20.   Newspaper executives cited aggressive efforts by many publishers to increase prices for home delivery and single copies.