جراد: الفرق بين النسختين

* [http://www.encapafrica.org/documents/PEA_pestmanagement/ERITREA_LG_SEA_MAR93.doc USAID Supplemental Environmental Assessment of the Eritrean Locust Control Program ]

* [http://eh.net/bookreviews/library/0913 ''Locust'' - Jeffrey A. Lockwood (2004)]

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