1.
[Place of publication not identified] : [publisher not identified], 2008.
English | IN 4 January 2008 Vol 13 No 1 | Available |
2.
London : Sweet & Maxwell, 1996.
Third edition.
English | F 13 COR.I(3) | Available |
3.
4.
5.
London, England : Sweet & Maxwell, 2002.
English | S 51 GB 10 | Available |
6.
7.
Geneva, Switzerland : International Union for the Protection of New Varieties of Plants (UPOV), 1992]
English | E 241S21 UPOV.S | Available |
8.
London [England] : Sweet & Maxwell, 2003.
Fifth edition.
English | F 13 COR.I(5) | Available |
9.