Preferred embodiments and their comparative embodiments of {TAIL ~ hydrogen storage alloys} having a desired composition represented by {HEAD ~ the formula} MmNi3.70 Co0.60 Mn0.60 Al0.20 will be described hereinafter 
Preferred embodiments and their comparative embodiments of { TAIL ~ hydrogen storage alloys } having a desired composition represented by { HEAD ~ the formula } MmNi3.70 Co0.60 Mn0.60 Al0.20 will be described hereinafter
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