@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<http://www.irandoc.acir/onto/irandoc/math0006620>
  skos:prefLabel "معادله دیفرانسیل جزئی غیر خطی"@fa, "nonlinear partial differential equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/math0006616> .

<http://www.irandoc.acir/onto/irandoc/math0006239>
  skos:prefLabel "هیدرولوژی"@fa, "hydrology"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/math0006616> .

<http://www.irandoc.acir/onto/irandoc/math0006761>
  skos:prefLabel "معادله دیفرانسیل جزئی مرتبه دوم"@fa, "second-order partial differential equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/math0006616> .

<http://www.irandoc.acir/onto/irandoc/math0006616>
  skos:related <http://www.irandoc.acir/onto/irandoc/math0006239>, <http://www.irandoc.acir/onto/irandoc/math0006761> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/math0006620> ;
  skos:prefLabel "معادله ریچاردز"@fa, "richards equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .