. : ; ( , ), .. . , .
- , -;
- , .
, .
( .. , ) - Book.ru ; - ; .
- .
:
/ | ||
* | ||
1. | Znanium.com | http://znanium. com |
2. | www.biblio-online.ru | |
3. | BOOK.ru | www.book.ru ; , |
4. | East View information Services | www.ebiblioteka.ru ( ) |
5. | http://mcont.ru/ - - ( ) | |