TY  - BOOK
AU  - Massey,N.W.D.
TI  - Resources inventory of Botswana: industrial rocks and minerals 
T2  - Mineral resources report ; no. 3
AV  - TN799.7.B55 M37
PY  - 1973///]
CY  - Lobatse
PB  - Geological Survey Dept.
KW  - Nonmetallic minerals -- Botswana
KW  - Building stones -- Botswana
N1  - Cover title; Bibliography: p. 36-39
ER  -