xxx
Array
(
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        (
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            [caid] => 243
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            [pressure] => 
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            [e_gap] => 
            [energy] => 0.737
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            [shear_mod] => 445.6
            [vicker_hard] => 83.6
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
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            [energy] => 
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            [shear_mod] => 
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            [publ_year] => 2012
            [ref] => 
        )

    [2] => Array
        (
            [id] => 1044
            [topology] => 4<sup>5</sup>T11
            [link_rcsr] => 
            [in_col] => 5
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            [vicker_hard] => 
            [ref_file] => /References/2012_JSuperHardMat_34_386
            [publ_year] => 2012
            [ref] => 
        )

)
xxx