TY  - BOOK
AU  - Sisam J W B
ED  - Imperial Agricultural Bureaux
TI  - Use of aerial survey in forestry and agriculture
U1  - 634.932 
PY  - 1947///
CY  - Oxford
PB  - Imperial Forestry Bureaux
KW  - Aerial survey
KW  - Agriculture
KW  - Forestry
KW  - Forestry engineering
ER  -