Herfs, W. Examination and approval of plant protection products in the Federal Republic of Germany and their legal basis. Berlin etc.: Parey, 1982 29 p. : ill.
Herfs, W. Examination and approval of plant protection products in the Federal Republic of Germany and their legal basis. Berlin etc.: Parey, 1982 29 p. : ill.
Herfs, W. (1982) Examination and approval of plant protection products in the Federal Republic of Germany and their legal basis, Berlin etc.: Parey 29 p. : ill.
Herfs, W. (1982). Examination and approval of plant protection products in the Federal Republic of Germany and their legal basis. Berlin etc.: Parey, 29 p. : ill.
Herfs W. Examination and approval of plant protection products in the Federal Republic of Germany and their legal basis. Berlin etc.: Parey; 1982. p. 29 p. : ill.
