TY  - BOOK
AU  - Doganovskii, M.G.
TI  - Photoelectric instrument for determining the accuracy of seed drilling
U1  - 631.33 D51P 
PY  - 1967///
CY  - Bedford, U.K.
PB  - National Institute of Agricultural Engineering
KW  - DRILL
KW  - PHOTOELECTRIC CELLS
KW  - SOWING
ER  -