TY - BOOK AU - RAJESH G. K AU - Er. Jayan P. R (Guide) TI - Development and testing of a countersinking attachment to the tractor operated post - hole digger CY - Tavanur 1996 PB - Department of Farm Power Machinery and Energy N1 - Development and testing of a countersinking attachment to the tractor operated post - hole digger N2 - In India of pits are done manually using implements like spade, pick - axe etc. This method is not suitable for large quantity and require much labour and time. As per the new technique, conical shaped holes for pits having upper diameter of 90 cm and depth 80 cm are sufficient UR - https://drive.google.com/open?id=1vyzdytJQRArmyTRd4tZdJbEU3IzRvXbO ER -