33
/es/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
153790
13653
2
Create a timeline
Public Timelines
For educational institutions For teachers For students Cabinet
For educational institutions For teachers For students Open cabinet
FAQ Obtener premium
Create a timeline
Public timelines
FAQ
About & FeedbackAcuerdoPrivacidadFAQ
Support 24/7  
CabinetGet premium
Donate

29 dic 1971 año - Письмо Министерства № 473 – М «О преподавании природоведения в школах РСФСР» большое положительное влияние природоведения на образовательную и воспитательную работу с учащимися.

Añadido al timeline:

лента

ByАнна Панфилова
15 oct 2017
0
0
575

fecha:

29 dic 1971 año
Ahora mismo
~ 53 years ago
About & FeedbackAcuerdoPrivacidadFAQ
Support 24/7  
CabinetGet premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL