TY - BOOK AU - Weber,B. ED - Geological Survey of Papua New Guinea TI - Construction materials in the Morobe District T2 - Note on investigation PY - 1973///] CY - [Port Moresby] PB - Dept. of Lands and Surveys KW - Aggregates (Building materials) KW - Papua New Guinea KW - Morobe Province KW - Gravel KW - Road materials KW - Marobe Province N1 - Bibliography : leaf 32 ER -