Nikolai Alekseievich Gladkov
Nikolai Alekseievich Gladkov ( 20 March 1905 – 31 October 1975 ) was a Soviet ornithologist born in Russia . 
<triplet> Nikolai Alekseievich Gladkov <subj> 20 March 1905 <obj> date of birth <subj> 31 October 1975 <obj> date of death