RT Journal Article SR Electronic(1) A1 Fischer, Rudolf-Josef YR 2016 T1 Hermann M. Ölberg. Aufsätze zur Interlinguistik und Esperantologie. JF Language Problems and Language Planning VO 40 IS 2 SP 226 OP 229 DO https://doi.org/10.1075/lplp.40.2.08fis PB John Benjamins SN 0272-2690, AB , UL https://www.jbe-platform.com/content/journals/10.1075/lplp.40.2.08fis