00487nam a22001577a 4500 312150 20260707210034.0 312150 283406 Otieno Victor 406402 Form Four graduate designs blocks machine Victor Otieno Nairobi Nation media 2018 p.16-17 ill.col Business daily Tuesday,January,16th Innovator appeals for support to produce the machine in bulk Blocks machines 406403 ART NI