xxx
Array
(
    [0] => Array
        (
            [id] => 629
            [topology] => 3,4T226
            [link_rcsr] => 
            [in_col] => 2
            [transitivity] => [2552]
            [space_group] => Cmcm
            [pearson] => oS24
            [cn] => 3, 4 (1:2)
            [Year] => 2005
            [cn_sort] => 003-004-001-002-
            [topology_str] => 3,4T226
            [caid] => 136
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 3.213
            [e_gap] => 
            [energy] => 0.309
            [bulk_mod] => 369.7
            [shear_mod] => 376.8
            [vicker_hard] => 68.3
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 630
            [topology] => 3,4T226
            [link_rcsr] => 
            [in_col] => 2
            [transitivity] => [2552]
            [space_group] => Cmcm
            [pearson] => oS24
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            [Year] => 2005
            [cn_sort] => 003-004-001-002-
            [topology_str] => 3,4T226
            [caid] => 136
            [nn] => 1
            [name] => (4,0)ab
            [pressure] => 40
            [density] => 
            [e_gap] => 2.3
            [energy] => 
            [bulk_mod] => 361
            [shear_mod] => 
            [vicker_hard] => 
            [ref_file] => /References/2005_PhysRev_B_72_214109
            [publ_year] => 2005
            [ref] => 
        )

    [2] => Array
        (
            [id] => 631
            [topology] => 3,4T226
            [link_rcsr] => 
            [in_col] => 2
            [transitivity] => [2552]
            [space_group] => Cmcm
            [pearson] => oS24
            [cn] => 3, 4 (1:2)
            [Year] => 2005
            [cn_sort] => 003-004-001-002-
            [topology_str] => 3,4T226
            [caid] => 136
            [nn] => 2
            [name] => (4,0)ab
            [pressure] => 
            [density] => 
            [e_gap] => 2.12
            [energy] => 
            [bulk_mod] => 376.0
            [shear_mod] => 390.4
            [vicker_hard] => 65.6
            [ref_file] => /References/2016_AIPAdvance_055020
            [publ_year] => 2016
            [ref] => 
        )

)
xxx