विचित्र विज्ञान : हरिशंकर शर्मा द्वारा हिंदी पीडीऍफ़ पुस्तक – सामाजिक | Vichitra Vigyan : by Harishankar Sharma Hindi PDF Book – Social (Samajik)

Pustak Kharidein

Pustak Ka Vivaran : Jis Relagadee ka itana mahatv hai, usake avishkar kee katha bhee badi majedar hai. Aaj rel ke injan kee shakti ko dekh kar sab ko bada aashchary hota hai, parantuu yah bat bahut kam logo ko maloom hai ki aakhir is injan ka avishkar kaise huya ? jaisa injan aaj ham dekhate hai, kya shuroo mein vah aisa hee ban gaya tha athava usamen aur………..

Description about eBook : The train which is so important, the story of its invention is also great fun. It is a great surprise to see the power of the engine of the train today, but very few people know that how this engine was invented? As we see in the engine today, whether it was in the beginning or else………..

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