000 00298nam a2200121Ia 4500
008 170101s1939 xx 000 0 und d
082 _a631.6 AYR
100 _aAyres Q.C.
245 0 _aland Drainage and Reclamation
260 _bMcGraw Hill Book Co.
_c1939
300 _a496 p.
942 _2ddc
_cB
999 _c383316
_d383316