TY - GEN T1 - Technical Working Party for Ornamental Plants and Forest Trees :UPOV / N1 - See sessions before XV under Title TECHNICAL WORKING PARTIES : UPOV : 1973-1981; UPOV/TW/I-16, TW/17-36, TW/37-46; Sessions XV : Cambridge, U.K. : Oct 5 - 7, 1982; XVI : Conthey, Switzerland : Sept 27 - 29, 1983; XVII : Hanover, Germany : Aug 7 - 9, 1984; XVIII : Aarsley, Denmark : June 25 - 27, 1985; XIX : Wageningen, Netherlands : July 16 - 18, 1986; XX : Kiryat Anavim, Israel : March 23 - 26, 1987; XXI : Gent, Belgium : June 20 - 24, 1988; XXII : Hanover, Germany : May 29 - June 1, 1989; XXIII : Tokyo, Japan : Sept 16 - 24, 1990; XXIV : Cambridge, United Kingdom : June 24 - 28, 1991; XXV : Stellenbosch, South Africa : Aug 27 - Sept 7, 1992;. ID - 17454 KW - WIPO AND UPOV DOCUMENTS : BIRPI : PARIS UNION: NEW PLANT VARIETIES TI - Technical Working Party for Ornamental Plants and Forest Trees :UPOV / ER -