Agricultural mechanization in Asia : AMA Volume 50 Issue 1 Volume 49 Issue 4 Issue 3 Issue 2 Issue 1 Volume 48 Issue 4 Issue 3 Issue 2 Issue 1 Volume 47 Issue 4 Issue 3 Issue 2 Issue 1 Volume 46 Issue 4 Issue 3 Issue 2 Issue 1 Volume 45 Issue 4 Issue 3 Issue 2 Issue 1 Volume 44 Issue 4 Issue 3 Issue 2 Issue 1 Volume 43 Issue 4 Issue 3 Issue 2 Issue 1 Volume 42 Issue 4 Issue 3 Issue 2 Issue 1 Volume 41 Issue 4 Issue 3 Issue 2 Issue 1 Volume 40 Issue 4 Issue 3 Issue 2 Issue 1 Volume 39 Issue 4 Issue 3 Issue 2 Issue 1 Volume 38 Issue 4 Issue 3 Issue 2 Issue 1 Volume 37 Issue 4 Issue 3 Issue 2 Issue 1 Volume 36 Issue 2 Issue 1 Volume 35 Issue 2 Issue 1 Volume 34 Issue 4 Issue 3 Issue 2 Issue 1 Volume 33 Issue 4 Issue 3 Issue 2 Issue 1 Volume 32 Issue 4 Issue 3 Issue 2 Issue 1 Volume 31 Issue 4 Issue 3 Issue 2 Issue 1 Volume 30 Issue 4 Issue 3 Issue 2 Issue 1 Volume 29 Issue 4 Issue 3 Issue 2 Issue 1 Volume 28 Issue 4 Issue 3 Issue 2 Issue 1 Volume 27 Issue 4 Issue 3 Issue 2 Issue 1 Volume 26 Issue 4 Issue 3 Issue 2 Issue 1 Volume 25 Issue 4 Issue 3 Issue 2 Issue 1 Volume 24 Issue 4 Issue 3 Issue 2 Issue 1 Volume 21 Issue 3