فهرست مقالات Ward's method of clustering دسترسی آزاد مقاله صفحه چکیده متن کامل 1 - Recognizing Ecological Species Groups and their Relationships with Environmental Factors at Chamanbid-Jozak Protected Area, North Khorasan Province, Iran Mohabat Nadaf hamid Ejtehadi Mansour Mesdaghi Mohamad Farzam