International symposium on biological control implementation :

International symposium on biological control implementation : proceedings and abstracts / sponsored by U.S. Departament of Agriculture ... [et al.]. - McAllen, Texas : NAPPO, 1989. - iii, 208 p. ; 28 cm.

Boletin No. 6.

Incluye bibliografia.

QH508 / I58

Con tecnología Koha