xxx
Array
(
    [0] => Array
        (
            [id] => 858
            [topology] => 3<sup>2</sup>,4T204
            [link_rcsr] => 
            [in_col] => 3
            [transitivity] => -
            [space_group] => P63/mcm
            [pearson] => hP36
            [cn] => 3, 4 (2:1)
            [Year] => 2015
            [cn_sort] => 003-004-002-001-
            [topology_str] => 3<sup>2</sup>,4T204
            [caid] => 199
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 2.136
            [e_gap] => 
            [energy] => 0.858
            [bulk_mod] => 243.3
            [shear_mod] => 170.3
            [vicker_hard] => 20.0
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 859
            [topology] => 3<sup>2</sup>,4T204
            [link_rcsr] => 
            [in_col] => 3
            [transitivity] => -
            [space_group] => P63/mcm
            [pearson] => hP36
            [cn] => 3, 4 (2:1)
            [Year] => 2015
            [cn_sort] => 003-004-002-001-
            [topology_str] => 3<sup>2</sup>,4T204
            [caid] => 199
            [nn] => 1
            [name] => Hex-C36
            [pressure] => 0-20
            [density] => 2.179
            [e_gap] => 1.57
            [energy] => 
            [bulk_mod] => 244.7
            [shear_mod] => 176.3
            [vicker_hard] => 24.7
            [ref_file] => /References/2015_Carbon_91_518
            [publ_year] => 2015
            [ref] => 
        )

)
xxx