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ABSTRACT
The Bull hydraulic sampler has been mounted to provide greater mobility in soil sampling and can also be used for placing neutron probe access tubes.
1 Contribution from Texas A&M University, Lower Rio Grande Valley Research & Extension Center, Weslaco, Tex.
2 Assistant Professor, Associate Professor, and Chief Operating Engineer, Texas A&M University, Lower Rio Grande Valley Res. & Ext. Center, Weslaco, Tex.
Received for publication June 10, 1968. Accepted for publication August 29, 1968.
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