TY  - BOOK
AU  - Duckworth, John
TI  - Substitute feeding stuffs 
T2  - Ministry of agriculture and fisheries 
PY  - 1951///
CY  - London: 
PB  - His Majest's Stationary Office,  
KW  - Agriculture
KW  - Feedings
KW  - Apples
ER  -