The left table ('Qual') counts the types of qualifiers as defined in the first part of Zonal Qualifiers 1990-1993 (C15). The right table ('Zonal') counts the players who qualified at a certain zonal ('z'), as listed in the second part of the same page.
At the same time I worked on the qualification paths, I added a few new clippings to Zonals 1990-1993 (C15). These are mainly explanations about players from specific zonals and I have a few more to add when I find the time.
The first row in the 'Qual' table counts eight players where I am not certain how they qualified. These are mainly players who were nominated by Continental Vice-Presidents (Qual = 'd').
Some of the counts in the 'Zonal' table are also likely to be wrong. Zone 4 (USSR) reportedly had six qualifiers from the zonal, but I can only identify five. Zone 8 (Central America) shows three qualifiers, but one of these might have been the nomination of the Continental Vice-President.
Whatever the real status of my tables and counts, they give a good basis for further investigation. Before I pursue that, I would like to incorporate the dozen new pages showing Qualification Paths into the rest of my material on the zonals.