TY - JOUR KW - Communicable Diseases KW - Data Collection KW - Humans KW - Nigeria KW - Prevalence AU - COLLARD P BT - The West African medical journal C1 - http://www.ncbi.nlm.nih.gov/pubmed/13880518?dopt=Abstract CN - COLLARD1962 DA - 1962 Feb J2 - West Afr Med J LA - eng PY - 1962 SP - 3 EP - 31 T2 - The West African medical journal TI - A sample survey to estimate the prevalence of certain communicable diseases in Katsina province, Nigeria. VL - 11 SN - 0043-3004 ER -