Nkakini, S. O.; Ayotamuno, M. J.; Ogaji, S. O. T.; Probert, S. D.
(Elsevier Science B.V., Amsterdam., 2006-12-01)
Surveys have been conducted, under the auspices of the Ministry of Agriculture
and Agricultural Development Projects (ADPs), in the 23 local-government areas
of the Rivers State, Nigeria. A structured questionnaire, ...