Mineral resources of Kerala and their utilization: Proceedings;Geoscience and Technology Association of Kerala
Menon,K.K
Mineral resources of Kerala and their utilization: Proceedings;Geoscience and Technology Association of Kerala State planning board - Trivandrum Planning board 1975
553 MEN.M / GEOD339
Mineral resources of Kerala and their utilization: Proceedings;Geoscience and Technology Association of Kerala State planning board - Trivandrum Planning board 1975
553 MEN.M / GEOD339