The present volume III/48 is a supplement to the earlier volumes III/20,
III/31 and III/39 of nuclear quadrupole resonance spectroscopy (NQRS)
data of condensed substances. Compilation of the original data in the
form of numeric database is continuing and the present supplement covers
a period from August, 1995 to the end of 2006. There are 2,535 entries
in this supplement and, therefore, the three volumes together provide
about 14,400 data which have been published since the discovery of NQRS
in 1951 until the end of 2006. Due to the large amount of data the
present supplement is published in two subvolumes, III/48A (1270
entries) and III/48B (1265 entries), respectively. The present
supplement gives NQRS data of substances new to the database as well as
new and/or revised data for substances already reported in the previous
volumes. In the latter case, not only the changes are provided but also
the entire revised entry is reproduced so that the reader need not look
for the previous entry in earlier volumes for the same substance. Thus,
readers are advised to try to find the substance of interest first in
this volume III/48 and then proceed backwards to volumes III/39, III/31
and III/20. Also, for the sake of readers' convenience, Chapters 1 and 2
have been reproduced from volume III/39 except for the eigenvalue tables
(Sects. 2. 8 through 2. 10 of volume III/39), with minor modifications
that adapt to this supplement.