xxx
Array
(
    [0] => Array
        (
            [id] => 219
            [topology] => afw
            [link_rcsr] => http://rcsr.net/nets/afw
            [in_col] => 1
            [transitivity] => [1221]
            [space_group] => R32
            [pearson] => hR9
            [cn] => 4
            [Year] => 2016
            [cn_sort] => 004-
            [topology_str] => afw
            [caid] => 31
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 3.157
            [e_gap] => 
            [energy] => 0.923
            [bulk_mod] => 
            [shear_mod] => 
            [vicker_hard] => 
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 220
            [topology] => afw
            [link_rcsr] => http://rcsr.net/nets/afw
            [in_col] => 1
            [transitivity] => [1221]
            [space_group] => R32
            [pearson] => hR9
            [cn] => 4
            [Year] => 2016
            [cn_sort] => 004-
            [topology_str] => afw
            [caid] => 31
            [nn] => 1
            [name] => Tri-C9
            [pressure] => 66
            [density] => 3.232
            [e_gap] => Metal
            [energy] => 
            [bulk_mod] => 365
            [shear_mod] => 272
            [vicker_hard] => 34.8
            [ref_file] => /References/2016_CrystGrowthDes_16_1360
            [publ_year] => 2016
            [ref] => 
        )

)
xxx