000
00322nam a2200133Ia 4500
008
130225s9999 xx 000 0 und d
100
_a
Gray, R.B.
245
_a
Harvesting with combines
260
_a
Washington
_c
1955
300
_a
1-42 p.
440
_a
United States Department of A
901
_a
45849
942
_c
B
_2
udc
999
_c
8291
_d
8291