Singh, Y. K. Dr.
Teaching of environmental science : modified syllabus of B.T.C./M.ED. of Indian & Foreign University/training institute &education colleges recognized by National Council of Teacher Education, New Delhi Dr. Y. K. Singh - New Delhi A.P.H. Publishing House 2005 - x, 366p
Enviromental science
363.7 / SIT
Teaching of environmental science : modified syllabus of B.T.C./M.ED. of Indian & Foreign University/training institute &education colleges recognized by National Council of Teacher Education, New Delhi Dr. Y. K. Singh - New Delhi A.P.H. Publishing House 2005 - x, 366p
Enviromental science
363.7 / SIT