xxx
Array
(
    [0] => Array
        (
            [id] => 627
            [topology] => 4<sup>2</sup>T109
            [link_rcsr] => 
            [in_col] => 2
            [transitivity] => [2543]
            [space_group] => C2
            [pearson] => mS8
            [cn] => 4
            [Year] => 2004
            [cn_sort] => 004-
            [topology_str] => 4<sup>2</sup>T109
            [caid] => 135
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 2.962
            [e_gap] => 
            [energy] => 1.922
            [bulk_mod] => 228.6
            [shear_mod] => 219.8
            [vicker_hard] => 38.5
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 628
            [topology] => 4<sup>2</sup>T109
            [link_rcsr] => 
            [in_col] => 2
            [transitivity] => [2543]
            [space_group] => C2
            [pearson] => mS8
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            [Year] => 2004
            [cn_sort] => 004-
            [topology_str] => 4<sup>2</sup>T109
            [caid] => 135
            [nn] => 1
            [name] => I
            [pressure] => 
            [density] => 2.865
            [e_gap] => 0.9
            [energy] => 
            [bulk_mod] => 154.0
            [shear_mod] => 
            [vicker_hard] => 
            [ref_file] => /References/2004_PhysRev_B_70_045101
            [publ_year] => 2004
            [ref] => 
        )

)
xxx