KHAN, R., 1987. Pharmaco-anatomical evolution of bark and leaf of some arborescrnt Moracrae. Upublished Ph.D. Thesis of Aligarh Muslim University, Aligarh, India .
In 1987 the university's theses were unlikely to exist in electronic form and even now they may not have the resources or the will to scan and digitize their older theses. But try contacting their library. BTW, your citation has two spelling mistakes: arborescrnt -> arborescent, Upublished -> Unpublished.