TY  - BOOK
AU  - Gregor,Howard F.
TI  - Geography of agriculture: themes in research 
T2  - Prentice-Hall foundations of economic geography series
SN  - 0133513203
U1  - 911 23
PY  - 1970///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Historical geography
N1  - Includes bibliographical references
ER  -