Libri di injurious and beneficial insects
4 libri in questo genere
Legislation against injurious insects
L. O. Howard
Nessuna valutazione
The gardener's bug book
Cynthia Westcott
Nessuna valutazione
Insect pests and how to beat them, including notes on plant diseases, soils and manures
James Sarsfield
Nessuna valutazione
Recognition of diseases and pests of farm crops
Ernst Gram
Nessuna valutazione