SNMP DHCP Server

Hello!
This page in wiki https://wiki.mikrotik.com/wiki/Manual:SNMP says that RouterOS uses following MIB - DHCP-SERVER-MIB
Could you point me to the place where I can get this MIB? By googling I found only D-Link and Cisco MIBs

I want to get some information (MAC, IP, hostname, lease time) from ROS DHCP Server by SNMP

If you do not get DHCP information using SNMP, you can for sure get it from Syslog.
I do use Syslog in my Splunk for Mikrotik project here:
http://forum.mikrotik.com/t/tool-using-splunk-to-analyse-mikrotik-logs-3-3-graphing-everything/121810/1