There is no single subject code that describes my paper, what should I do?

 
There is no single subject code that describes my paper, what should I do?
 

You may choose a number of different subject codes which apply to the content of your paper. We have tried very hard to cover the major areas of academic study with our subject code list because it is not feasible for us to list every possible topic as a subject code. Sometimes, however, an individual’s paper cannot be assigned one single code which describes his or her work. In these cases, a combination of subject codes that approximates the content of the paper is the best option.