What is the difference between a miscellaneous and specialised recruitment agency?

The function of what can be termed a miscellaneous personnel recruiting agency and another type that specializes in one particular area of the job market, is based on the variety of of jobs that the agency advertises itself to handle.

Thus a miscellaneous job filling firm or agency can assist employers to fill a large variety of positions.

A specialised firm may for example only recruit candidates in the high technology field.