PHI Learning
Helping Teachers to Teach and Students to Learn
Helping Teachers to Teach and Students to Learn
Helping Teachers to Teach and Students to Learn
ANIS KUMAR RAY, Ph.D., has been a faculty of the Department of Geology, Presidency College, Kolkata. He has nearly 40 years of teaching experience. He has served with distinction as assistant editor with Indian Journal of Earth Sciences and served as executive member of Indian Society of Earth Sciences. Dr. Ray has published many research papers.
