VIGYAN PRAVRUTIO 

 

SHVASHAN TANTRA ANE STETHOSKOP

VIGYAN VISHAY MA SHVASANTANTR ANE FEFASANU MODEL BANAVA MATE AA VIDEO UPAYOGI BANSHE. BALAKONE JOYELU ANE SANBHALELU VADHARE YAD RAHE CHHE TE MATE FEFASA ANE STETHOSKOP BANAVAMA AVE CHHE