by Singh, Gurdip, Kapoor, I. P. S., Singh, O. P., Rao, G. P., Prasad, Y. R., Leclercq, P. A., Klinkby, Naja
Published in Flavour and fragrance journal (01.07.2000)

by O. P. Singh Tariq Masood Ali Khan, Tad S. Murty, Md. Sazedur Rahman
Published in Marine geodesy (01.01.2001)

by Batra, C P, Raghavendra, K, Adak, T, Singh, O P, Singh, S P, Mittal, P K, Malhotra, M S, Sharma, R S, Subbarao, S K
Published in Indian journal of medical research (New Delhi, India : 1994) (01.01.2005)

by Singh, N. (Medical College, Jabalpur, India.), Singh, O.P, Sharma, V.P
Published in Journal of the American Mosquito Control Association (01.06.1996)

by Bhattacharya, Amit, Bhattacharya, Subir, Chatterjee, Somsubhra, Chakraborty, Rajarshi, Dan, Amitava, Singh, O P
Published in Indian journal of public health research and development. (01.01.2014)

by Dhote, K K, Singh, P O, Silakari, R
Published in WIT Transactions on Ecology and the Environment (01.01.2013)

by Singh, P O, Dhote, K K, Soni, N
Published in WIT Transactions on Ecology and the Environment (01.01.2013)

by Subbiah, Senthilnathan, Singh, O.P., Mohan, Srikanth K., Jeyaraj, Arockia P.
Published in Engineering failure analysis (01.04.2011)

by Sohail, Mohd, Kaul, Asha, Bali, Prerna, Raziuddin, M., Singh, M.P., Singh, O.P., Dash, A.P., Adak, T.
Published in Molecular immunology (01.03.2008)

by Srivastava, S.K., Singh, O.P., Pandey, G.N.
Published in Solar energy (01.07.1993)

by Singh, O.P., Mohan, S., Venkata Mangaraju, K., Jayamathy, M., Babu, R.
Published in Engineering failure analysis (01.07.2010)

by Singh, P.K, Singh, O.P, Jaiswal, C.S, Chauhan, H.S
Published in Agricultural water management (01.09.1999)

by Luthra, S.K., Kaledonkar, M.J., Singh, O.P., Tyagi, N.K.
Published in Agricultural water management (01.06.1997)

by Ahirwar, Manish, Yogi, Veenita, Singh, O, Ghori, H, Tiwari, Vivek, Francis, Bibin
Published in Clinical cancer investigation journal (01.11.2018)

by Singh, O.P., Srivastava, S.K., Gaur, A.
Published in Energy conversion and management (01.04.1996)

by Singh, O. P., Khan, Tariq Masood Ali, Rahman, Md. Sazedur
Published in Current science (Bangalore) (25.02.2001)

by Singh, O P, Garg, M, Kumar, V, Chaudhary, Y V
Published in Journal of applied fluid mechanics (01.01.2013)

by Kumar, M. Dinesh, Singh, O. P., Sivamohan, M.V.K.
Published in Water international (01.05.2010)

by Singh, Raj Pal, Kumar, Manoj, Singh, O P, Singh, Birbal
Published in Indian journal of radio & space physics (01.08.2009)

by Singh, N.B., Singh, O.P., Singh, N.P., Singh, Namwar, Singh, Y.P., Singh, Narsingh Bahadur
Published in Progress in crystal growth and characterization of materials (2002)