/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Singhal%2C%20O.P%22&sort_by=&format=rss 5 0 50 ISBN:04-7092-076-8 /cgi-bin/koha/opac-detail.pl?biblionumber=117 By Singhal, O P..
Allahabad : Saroj Prakashan , 1997 .
147 ; . 04-7092-076-8

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]]> /cgi-bin/koha/opac-detail.pl?biblionumber=117 ISBN:04-7092-076 /cgi-bin/koha/opac-detail.pl?biblionumber=313 By Singhal, O P..
Allahabad : Technical Publishers of India , 1997 .
64 ; . 04-7092-076

]]> Place hold on Solar photo-volatic technology for rural areas /

]]> /cgi-bin/koha/opac-detail.pl?biblionumber=313 ISBN:81-7097-044-X /cgi-bin/koha/opac-detail.pl?biblionumber=6191 By Singhal, O P ..
Allahabad : Saroj Prakashan , 1996 .
280 ; . 81-7097-044-X

]]> Place hold on Non conventional sources of energy /

]]> /cgi-bin/koha/opac-detail.pl?biblionumber=6191 ISBN:81-7097-047-4 /cgi-bin/koha/opac-detail.pl?biblionumber=7418 By Singhal, O P..
Allahabad : Technical Publishers of India , 1998 .
344 ; . 81-7097-047-4

]]> Place hold on Solar energy principles and practices /

]]> /cgi-bin/koha/opac-detail.pl?biblionumber=7418 ISBN:8187253207 /cgi-bin/koha/opac-detail.pl?biblionumber=13973 By Singhal, O.P.
Meerut Aman publishing house 8187253207

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