bids are invited for models 1 46 sanitary well and insanitary well , shallow and deep well , rapid sand filter , slow sand filter , sanitary latrine , dug well latrine , bore hole latrine , trench latrine , berkfeld filter , model sanitary house , pasteurs chamber filter , slaughter house , sanitary dairy , bio gas plant , sewage treatment plant , smokeless chulah , refuse rubbish cart , night soil cart , soakage pit , septic tank , incinerator bee hive type , maternity and child health center , vasectomy and tubectomy , copper t , xerophthalmia , angular stomatitis , pellagra , scurvy , dental carries , osteomalacia , fluorises , rickets , kwashiorkar , marasmus , chillblains , goitre , poliomyelitis , tetanus baby , sources of vitamin a , sources of vitamin b , sources of vitamin c , sources of vitamin d , sources of vitamin e , prevention and control of malaria , wuchereria bancrofti , spread of bubonic plague , xenospsylla cheopis rat flea , sarcoptes scabies itch mite , measles , prevention of typhoid fever , spread of dysentery diarrhoea , pneumonic plague , smallpox vs chickenpox , vaccination stages , mosquito aedes , control of tuberculosis , diphtheria of pharynx , hack fly , mumps , mosquito anopheles , scabies , rubella , tb in lungs , leprosy face , elephantiasis , prevention and control of hepatitis , life cycle of culex , breeding places of houseflies , life cycle of taenia solium and saginata , life cycle of ancylostoma duodenale hadeworm , life cycle of wuichereria bancrofti filaria , life cycle of entamoeba histolytica , life cycle of giardia intestinalis , life cycle of aedes , life cycle of sand fly , life cycle of anopheles , life cycle of ascaris total quantity : 78