"2015-03-14" . . "Richard Langdon Johnson" . "0000000358952218" . "Johnson" . "Richard Langdon" . . . . . . "16762522"^^ . . . . . "1933"^^ . . "ISNI" . . "2015-03-13"^^ . "Geological map of the Republic of Zambia / A. R. Drysdall, director; compiled by J. G. Thieme and R. L. Johnson, 1981. - . - LC authorities. - http://lccn.loc.gov/n80068105. - 2014-05-14"@fr . "2014-05-14" . . "Richard Langdon Johnson"@fr . "male" . . . . .