xxx
Array
(
    [0] => Array
        (
            [id] => 1067
            [topology] => 3<sup>2</sup>,4<sup>4</sup>T33
            [link_rcsr] => 
            [in_col] => 6
            [transitivity] => [6764]
            [space_group] => Pmma
            [pearson] => oP12
            [cn] => 3, 4 (1:2)
            [Year] => 2014
            [cn_sort] => 003-004-001-002-
            [topology_str] => 3<sup>2</sup>,4<sup>4</sup>T33
            [caid] => 252
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 3.251
            [e_gap] => 
            [energy] => 0.809
            [bulk_mod] => 381.6
            [shear_mod] => 290.0
            [vicker_hard] => 37.6
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 1068
            [topology] => 3<sup>2</sup>,4<sup>4</sup>T33
            [link_rcsr] => 
            [in_col] => 6
            [transitivity] => [6764]
            [space_group] => Pmma
            [pearson] => oP12
            [cn] => 3, 4 (1:2)
            [Year] => 2014
            [cn_sort] => 003-004-001-002-
            [topology_str] => 3<sup>2</sup>,4<sup>4</sup>T33
            [caid] => 252
            [nn] => 1
            [name] => oP12-carbon
            [pressure] => 
            [density] => 3.3
            [e_gap] => Metal
            [energy] => 
            [bulk_mod] => 389.9
            [shear_mod] => 314.2
            [vicker_hard] => 42.2
            [ref_file] => /References/2014_JSupHardMat_36_257
            [publ_year] => 2014
            [ref] => 
        )

)
xxx