  With the help of a phenomenological approach outlined in the text in some
detail, we have dealt here with the description of the plots on rapidity and
pseudorapidity spectra of some hadron-secondaries produced in various
nucleus-nucleus interactions at high energies. The agreement between the
measured data and the attempted fits are, on the whole, modestly satisfactory
excepting a very narrow central region in the vicinity of y=$\eta$=0. At last,
hints to how the steps suggested in the main body of the text to proceed with
the description of the measured data given in the plots could lead finally to a
somewhat systematic methodology have also been made.
