Libros de injurious and beneficial insects
4 libros en este género
Legislation against injurious insects
L. O. Howard
Sin valoración
The gardener's bug book
Cynthia Westcott
Sin valoración
Insect pests and how to beat them, including notes on plant diseases, soils and manures
James Sarsfield
Sin valoración
Recognition of diseases and pests of farm crops
Ernst Gram
Sin valoración