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The Koehler Method of Guard Dog Training; An Effective & Authoritative Guide for Selecting, Training & Maintaining Dogs in Home Protection, Plant Security, Police, & Military Work

William R. Koehler

Winged Bean Production in the Tropics (Fao Plant Production & Protection Paper)

T.N. Khan

Organic Plant Protection

Roger Yepsen

The Organic Way to Plant Protection

Roger B. Yepsen Jr.

Plant Variety Protection Office Official Journal, Vol. 27

1999 April 1-June 30

Plant Variety Protection Office Official Journal, Vol. 20

U S Plant Variety Protection Office

Plant Variety Protection Office Official Journal, Vol. 18: April-June, 1990 (Classic Reprint)

U S Plant Variety Protection Office

10th International Congress of Plant Protection, 1983: Proceedings of a conference held at Brighton, England, 20-25 November, 1983 : plant protection for human welfare

International Congress of Plant Protection

Plant Variety Protection Office Official Journal, Vol. 10: January-March 1982 (Classic Reprint)

U S Plant Variety Protection Office

Plant Variety Protection Office Official Journal, Vol. 8

U S Plant Variety Protection Office

Plant Variety Protection Office Official Journal, Vol. 13: April-June 1985 (Classic Reprint)

U S Plant Variety Protection Office

Plant Variety Protection Office Official Journal, Vol. 14

April-June 1986

Official Journal of the Plant Variety Protection Office

U S Plant Variety Protection Office

Plant protection and human welfare: Inaugural Conference proceedings

Nigerian Society for Plant Protection

Plant Variety Protection Office Official Journal, Vol. 10: October-December 1982 (Classic Reprint)

U S Plant Variety Protection Office

Plant Variety Protection Office Official Journal, Vol. 11: July-September, 1983 (Classic Reprint)

U S Plant Variety Protection Office

Plant Variety Protection Office Official Journal, Vol. 9: October-December, 1981 (Classic Reprint)

U S Plant Variety Protection Office

Plant Variety Protection Office Official Journal, Vol. 10: July-September 1982 (Classic Reprint)

U S Plant Variety Protection Office

Plant Variety Protection Office Official Journal, Vol. 28: January 1-March 31, 2000 (Classic Reprint)

U S Plant Variety Protection Office

Plant Variety Protection Office Official Journal, Vol. 27: October 1-December 31, 1999 (Classic Reprint)

U S Plant Variety Protection Office