au.\*:("GROOT OBBINK J")
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OBSERVATIONS OF THE PRESSURE SURFACE IN THE AQUIFER OF AN IRRIGATION DISTRICT AT MERBEIN, AUSTRALIA.GROOT OBBINK J.1969; J. HYDROL.; NLD; 1969(11), VOL. 9, NUM. 0003, P. 294 A 306Miscellaneous
CONSTRUCTION OF PIEZOMETERS, AND METHOD OF INSTALLATION FOR GROUND WATER OBSERVATIONS IN AQUIFERS.GROOT OBBINK J.1969; J. HYDROL.; NLD; 1969(4), VOL. 7, NUM. 0004, P. 434 A 443Miscellaneous