xxx
Array
(
    [0] => Array
        (
            [id] => 1306
            [topology] => 4<sup>18</sup>T2
            [link_rcsr] => 
            [in_col] => 18
            [transitivity] => [(18)(27)(25)(16)]
            [space_group] => Cm
            [pearson] => mS36
            [cn] => 4
            [Year] => 2013
            [cn_sort] => 004-
            [topology_str] => 4<sup>18</sup>T2
            [caid] => 343
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 3.445
            [e_gap] => 
            [energy] => 0.658
            [bulk_mod] => 414.6
            [shear_mod] => 479.5
            [vicker_hard] => 90.5
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 1307
            [topology] => 4<sup>18</sup>T2
            [link_rcsr] => 
            [in_col] => 18
            [transitivity] => [(18)(27)(25)(16)]
            [space_group] => Cm
            [pearson] => mS36
            [cn] => 4
            [Year] => 2013
            [cn_sort] => 004-
            [topology_str] => 4<sup>18</sup>T2
            [caid] => 343
            [nn] => 1
            [name] => 18B
            [pressure] => 20
            [density] => 
            [e_gap] => 
            [energy] => 
            [bulk_mod] => 
            [shear_mod] => 
            [vicker_hard] => 
            [ref_file] => /References/2013_PhysRev_B_88_014102
            [publ_year] => 2013
            [ref] => 
        )

)
xxx