Analysis of seed yam varieties, sources and quantity demanded by farmers in major yam producing districts in Ghana

• Council for Scientific and Industrial Research (GH)

كما طُبع: P. Boadu

• Kwame Nkrumah University of Science and Technology (GH)

كما طُبع: R. Aidoo

• Kwame Nkrumah University of Science and Technology (GH)

كما طُبع: K. Ohene-Yankyera

كما طُبع: U. Kleih

• International Institute of Tropical Agriculture (NG)
• International Institute of Tropical Agriculture (NG)

كما طُبع: T. Abdoulaye

كما طُبع: J. Orchard

• International Institute of Tropical Agriculture (NG)
• International Institute of Tropical Agriculture (NG)

كما طُبع: N. Maroya

• Council for Scientific and Industrial Research (GH)

كما طُبع: M. Owusu

• Institute for Scientific and Technological Information (GH)
• Council for Scientific and Industrial Research (GH)

كما طُبع: S. Bekoe