Statistical design and analysis for intercropping experiments por Federer, Walter Theodore 1915-

Factorial designs por Raktoe, B. L. 1932-

Statistics and society data collection and interpretation por Federer, Walter Theodore 1915-

Experimental design theory and application. por Federer, Walter Theodore 1915-

Experimental design theory and application. por Federer, Walter Theodore 1915-

Experimental design theory and application por Federer, Walter T.