[lemma=in] [lemma=an] [lemma=increase] [tag=IN] [□=□]
[lemma=in] [lemma=an] [lemma=increase] [tag=IN] [tag=□]
[lemma=in] [lemma=an] [lemma=increase] [tag=IN] [lemma=□]
During the late 1980 's and early 1990 's , metaphysical uses and applications of rock crystal resulted in an increase in its production and processing .