Introducing the adaptation procedures within LILACS Methodology required for the descriptive and thematic representation of non-text materials (videos, photographs, sounds, maps and other materials) in databases. The format adopted was UNISIST/UNESCO “Reference Manual for Machine-Readable Bibliographic Description”, which has already been used to describe books, theses, non-conventional materials and serial publications in LILACS methodology. This format was supplemented by the MARC21 Lite “Machine-Readable Cataloguing” of the Library of Congress, the adaptation of which provides for the peculiarities of each type of material, in addition to allowing for compatibilization of data importing/exporting from/to other systems using MARC format. The program used in the LILACS Methodology, i.e. LILDBI – LILACS Bibliographic Description and Indexing – web version, enables describing these materials in general, being also configurable by the libraries which can create specific fields to address their own needs. Major fields created were based on the following MARC fields: 1) Leader: type of record field (screening material, sound records and others) and bibliographic level (“c” reinsert for collection); 2) field 007: fixed field for specific designation of materials (collage, drawing, picture, etc.); 3) field 008: item format (microfilm, braille, etc.), type of computer file (numerical data,  computer software, etc.), type of cartographic material (map, globe, etc), and others; 4) field 5XX: notes, where records can be further detailed.