na INLIS000000000000066 20190709070235 0010-0719000041 ta 190709 0 eng 631.3 631.3 IRR p IRRI Proceedings of the international agricultural machinery workshop / IRRI Manila : IRRI, 1978 203 Proceedings of the international agricultural machinery workshop Proceedings of the international agricultural machinery workshop Lemari 29 No 2 11/LP3PK/H/79