xxx
Array
(
    [0] => Array
        (
            [id] => 684
            [topology] => 3,4T179
            [link_rcsr] => 
            [in_col] => 2
            [transitivity] => -
            [space_group] => P63/mcm
            [pearson] => hP24
            [cn] => 3, 4 (1:1)
            [Year] => 2014
            [cn_sort] => 003-004-001-001-
            [topology_str] => 3,4T179
            [caid] => 148
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 2.790
            [e_gap] => 
            [energy] => 0.744
            [bulk_mod] => 329.7
            [shear_mod] => 277.3
            [vicker_hard] => 42.1
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 685
            [topology] => 3,4T179
            [link_rcsr] => 
            [in_col] => 2
            [transitivity] => -
            [space_group] => P63/mcm
            [pearson] => hP24
            [cn] => 3, 4 (1:1)
            [Year] => 2014
            [cn_sort] => 003-004-001-001-
            [topology_str] => 3,4T179
            [caid] => 148
            [nn] => 1
            [name] => Hex-C24
            [pressure] => 
            [density] => 2.84
            [e_gap] => Metal
            [energy] => 
            [bulk_mod] => 330.38
            [shear_mod] => 290.67
            [vicker_hard] => 91.66
            [ref_file] => /References/2014_JMatChem_2_2751
            [publ_year] => 2014
            [ref] => 
        )

    [2] => Array
        (
            [id] => 686
            [topology] => 3,4T179
            [link_rcsr] => 
            [in_col] => 2
            [transitivity] => -
            [space_group] => P63/mcm
            [pearson] => hP24
            [cn] => 3, 4 (1:1)
            [Year] => 2014
            [cn_sort] => 003-004-001-001-
            [topology_str] => 3,4T179
            [caid] => 148
            [nn] => 2
            [name] => Hex-C24
            [pressure] => 
            [density] => 2.839
            [e_gap] => 
            [energy] => 
            [bulk_mod] => 342
            [shear_mod] => 275
            [vicker_hard] => 
            [ref_file] => /References/2016_CrystGrowthDes_16_1360
            [publ_year] => 2016
            [ref] => 
        )

)
xxx