xxx
Array
(
    [0] => Array
        (
            [id] => 752
            [topology] => alb-x-d
            [link_rcsr] => http://rcsr.net/nets/alb-x-d
            [in_col] => 3
            [transitivity] => [3442]
            [space_group] => P6/mmm
            [pearson] => hP16
            [cn] => 4
            [Year] => 2013
            [cn_sort] => 004-
            [topology_str] => alb-x-d
            [caid] => 163
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 2.812
            [e_gap] => 
            [energy] => 0.940
            [bulk_mod] => 325.4
            [shear_mod] => 319.9
            [vicker_hard] => 56.8
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 753
            [topology] => alb-x-d
            [link_rcsr] => http://rcsr.net/nets/alb-x-d
            [in_col] => 3
            [transitivity] => [3442]
            [space_group] => P6/mmm
            [pearson] => hP16
            [cn] => 4
            [Year] => 2013
            [cn_sort] => 004-
            [topology_str] => alb-x-d
            [caid] => 163
            [nn] => 1
            [name] => hex-C16
            [pressure] => 
            [density] => 
            [e_gap] => 
            [energy] => 
            [bulk_mod] => 
            [shear_mod] => 
            [vicker_hard] => 
            [ref_file] => /References/2013_Diamond_RelatedNanostructures_6_75_89
            [publ_year] => 2013
            [ref] => 
        )

)
xxx