I collected the cps basic monthly data files for all the months except March (for the year 2012). All these 11 months cps basic files have 385 variables and can succesfully append these files. However, I run into the problem when I try to append the NBER cps March files (supplemental data) with other basic cps monthly files, as this file have 708 variables. Please let me know the solution on how to match these variables?
Highly appreciate your time and reponse to this question.