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ArchiveVolume 3, Issue 2, December 2019
Alberto Espinosa Cuéllar, Luís Ruiz Martinez, Ramón Rivera Espinosa, Ernesto Espinosa Cuéllar
Pages: 13-18     Published Online: Oct. 17, 2019
DOI: 10.11648/j.jcebe.20190302.11        Views 719      Downloads 158
Satish Chand Agarwal
Pages: 19-24     Published Online: Oct. 31, 2019
DOI: 10.11648/j.jcebe.20190302.12        Views 725      Downloads 179
Namakonov Boris, Melnikov Eduard, Poliakova Anastasiia
Pages: 25-28     Published Online: Oct. 31, 2019
DOI: 10.11648/j.jcebe.20190302.13        Views 718      Downloads 151
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