TY  - BOOK
AU  - Raup, Omer B.
CN  - QE75
CN  - QE75
CY  - [Reston, Va.] :
DA  - 1977.
ID  - 120316
KW  - Nonmetallic minerals
KW  - Fertilizers
KW  - Agriculture
N1  - Chiefly abstracts and summaries of conference proceedings.
PB  - U.S. Dept. of the Interior,
PP  - [Reston, Va.] :
PY  - 1977.
T1  - Proceedings of the Geology and Food Conference, with related U.S. Geological Survey projects, and a bibliography /
TI  - Proceedings of the Geology and Food Conference, with related U.S. Geological Survey projects, and a bibliography /
VL  - 768
ER  -