ind furttrer Oeve 858l. ?/ By General Assembly the Secretary-General was requested to carry out, with the assislance of qualified experts, a comprehensive study providing fact,ual information on present nuclear arsenalsr trends in the developnent of nuclear-weapon sysEems, Lhe effects of their use and Ehe implications for inEernational security as well as for negotiations on disarmanent of: (a) the doctrines of deEerrence and oEher guestions concerning nuclear weaponst (b) the continued quantitative increase and gualitaEive improvement and deve1opnentofnuclear-weaponsysEens.Thatstudy,entitled,,@ on Nuclear Weapons" (A/35/3921 1/ was completed in 1980. At its thirty-ninth iission, the General Assernbly adopted, on 17 December 1984, decision 39/423 by which it requested the Secretary-General to prepare a study under the tiEle: rDelerrence: its implications for disarmament and the arns racer negotiaEed arms reductions and international security and other related maEters", as recomnended byA/40/A98 English Page 21 the Advisory Board on Disarmament Studies in paragraph 5 of the report of theSecretary-General (A/39/549), to carry out the st,udy in accordance with the recommendat,ions of the Advisory Board in paragraphs 5 and 7 of the same document,and to submit the final report to the Assembly at its forty-first session. TheAssembly requested those t{ember States that wished to submit their views on thesubject to communicate them to the secretary-General not later than I April 19g5.