xxx
Array
(
    [0] => Array
        (
            [id] => 1519
            [topology] => nbo-x-d-4,4-C2/m-2
            [link_rcsr] => 
            [in_col] => 2
            [transitivity] => [2451]
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            [cn] => 4
            [Year] => 2017
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            [caid] => 448
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            [name] => 
            [pressure] => 
            [density] => 3.213
            [e_gap] => 
            [energy] => 1.412
            [bulk_mod] => -
            [shear_mod] => -
            [vicker_hard] => -
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
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            [cn_sort] => 004-
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            [density] => 
            [e_gap] => 
            [energy] => 
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            [ref_file] => /References/2017_ChemPhysChem_18_873
            [publ_year] => 2017
            [ref] => 
        )

)
xxx