Directory of scientific directories / compiled by J. Burkett - 4rd ed. - Guernsey, Channel Islands : F. Hodgson, 1969-1986. - 649 p. ; 26 cm. - 1st ed. (Mar. 1969)-4th ed. (1986). - 1986: Reference on research . - Reference on research. . LCCN: 89657520 Subjects--Topical Terms: Science--Directories --BibliographyBilim--Sözlükler--Bibliyografya LC Class. No.: Z7405.D55 Q145 / D57 Dewey Class. No.: 016.5025 / DIR 1979