"The bibliographic paradigm is not, as it was considered for a while, neither exclusively quantitative, nor exclusively technical, nor exclusively technological, nor obviously traditionalist" (prof. Ion Stoica). A culture without bibliographic tools and without a current bibliographic exercise remains blind and bereft, both in the face of the past and in the face of the future. Bibliography organizes information from any field, on any subject or about any personality. Herder, referring to the spiritual specificity of historical epochs, asserted that they are composed of individualities and which, like epochs, must be examined and judged by reference to their specific “essence and aims”. We refer to our era, and “B.P. Hasdeu” Municipal Library, engaged civically, culturally and scientifically, practices the bibliographic tool and principle in its research activity. “B.P. Hasdeu” Municipal Library has a rich experience in bibliographic research. It has passed, since the 90s, from the recommended bibliography (bibliographic lists, bibliographic journals, bulletins of new entries) to scientific bibliographies - thematic, selective, biobibliographies, bibliographic monographs, critical, analytical, historical, current, retrospective, branch, etc.