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title Obtaining chromium, molybdenum or tungsten
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4320094-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5776264-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SU-149224-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9272923-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SU-1831509-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4557906-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2247161-C2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1144699-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1160411-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CH-394624-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-3794193-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2190422-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007025899-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2073723-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6050129-A
broader http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-32

Total number of triples: 302.