ColorMarq and subject based library classification systems are a natural fit for efficient shelf management and easy collection access for library customers.  The video below illustrates how ColorMarq works with the BISAC classification system.
"I am impressed with the system's elegance in its simplicity and its potential to revolutionize library shelving practice. You have my admiration for developing a truly innovative solution to the problem of mis-shelved books in libraries.”  William J. Hubbard - Author of “Stack Management”