Citations:bitumina


 * 1) Plural form of bitumen.
 * 2) * 1951: Magyar Tudományos Akadémia, Acta chimica, pp202{1}, 225{2}, & 325{3}
 * {1}As regards the rheologic properties of bitumina, it is stated in accordance with literature data that they are the function of the origin of the bitumen…
 * {2}In order to influence the production of blown bitumina favourably, the chemistry of the various parts of the process must be known thoroughly.
 * {3}The investigation of the composition of bitumina and asphalts is a very difficult problem, since these materials consist of various kinds of compounds, with different molecular weights…
 * 1) * 1952: Polska Akademia Nauk, Bulletin, pp837{1}, 840{2}, & 841{3}
 * {1}In this paper the results of investigations on the interdependence between the appearance, within drill cores from Barycz, of organic substances (bitumina, humic acids) and free sulphur, and their oxidizing-reducing potential are briefly presented.
 * {2}The examination of the organic substance was limited to the determination of the content of bitumina and humic acids.
 * {3}As a rule, the bitumina content in the remaining strata remains near zero values:…
 * 1) * 1977: Instytut Geologiczny of Poland, Biuletyn: Bulletin, pp42{1} & 43{2}
 * {1}Shales with a small content of bitumina occur close to Grybów (44 km South from Tarnów).
 * {2}The obtained results were not encouraging as the content of bitumina did not exceed 2%1).
 * {2}The obtained results were not encouraging as the content of bitumina did not exceed 2%1).