xxx
Array
(
    [0] => Array
        (
            [id] => 809
            [topology] => NSI
            [link_rcsr] => http://europe.iza-structure.org/IZA-SC/framework.php?STC=NSI
            [in_col] => 3
            [transitivity] => [3652]
            [space_group] => C2/m
            [pearson] => mS12
            [cn] => 4
            [Year] => 2013
            [cn_sort] => 004-
            [topology_str] => NSI
            [caid] => 179
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 3.293
            [e_gap] => 
            [energy] => 0.782
            [bulk_mod] => 397.9
            [shear_mod] => 420.8
            [vicker_hard] => 77.5
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 810
            [topology] => NSI
            [link_rcsr] => http://europe.iza-structure.org/IZA-SC/framework.php?STC=NSI
            [in_col] => 3
            [transitivity] => [3652]
            [space_group] => C2/m
            [pearson] => mS12
            [cn] => 4
            [Year] => 2013
            [cn_sort] => 004-
            [topology_str] => NSI
            [caid] => 179
            [nn] => 1
            [name] => 6B
            [pressure] => 
            [density] => 
            [e_gap] => 
            [energy] => 
            [bulk_mod] => 
            [shear_mod] => 
            [vicker_hard] => 
            [ref_file] => /References/2013_PhysRev_B_88_014102
            [publ_year] => 2013
            [ref] => 
        )

)
xxx