Libri di plant pathogenic fungi
3 libri in questo genere
Control work on the Dutch elm disease in Connecticut, New York and New Jersey, for the winter and spring of 1933-1934
United States. Bureau of Entomology and Plant Quarantine. Division of Plant Disease Eradication and Control
Nessuna valutazione
Ribes eradication manual for use in the inland empire
United States. Bureau of Entomology and Plant Quarantine
Nessuna valutazione
Protect grain crops from stem rust
United States. Division of Plant Disease Control
Nessuna valutazione