List of Articles Keywords: toxicity Open Access Article Abstract Page Full-Text 1 - Effect of nettle extract on black bean aphid (Aphis fabae (Scopoli)), wheat aphid (Schizaphis graminum (Rondani)) and cowpea aphid (Aphis craccivora (Koch)) in comparison with soap compounds Kamal Ahmadi A. koushki H. M. Takaloo zadeh