http://general-terms.thesaurus.ekt.gr/vocabhttp://general-terms.thesaurus.ekt.gr/vocab?tema=10378physical scientists http://general-terms.thesaurus.ekt.gr/vocab?tema=10378 physicists NT http://general-terms.thesaurus.ekt.gr/vocab?tema=10378 earth scientists NT http://general-terms.thesaurus.ekt.gr/vocab?tema=10378 chemists NT http://general-terms.thesaurus.ekt.gr/vocab?tema=10378 biologists NT http://general-terms.thesaurus.ekt.gr/vocab?tema=10378 astronomers NT