Hans von Boetticher
Hans von Boetticher ( 30 August 1886 – 20 January 1958 ) was a German zoologist who worked on ornithology and entomology . 
<triplet> Hans von Boetticher <subj> 30 August 1886 <obj> date of birth <subj> 20 January 1958 <obj> date of death <subj> German <obj> country of citizenship <triplet> ornithology <subj> zoologist <obj> facet of