Re: Please suggest some EM lecture note

surely - the two approaches converge. you need a knowledge of calculus, especially differential geometry to be able to visualize some of the concepts.
The question is mostly integral equations or differential equations?

Ulaby book is good, but I feel it is for absolute beginners, and it explains concepts very well. The coloring also keeps you awake. It is a good reference when you need more intuition.

For a more mathematical approach, i suggest Cheng.
Again these are for undergraduates. Griffiths tends to focus more on electrodynamics, and it looks at stuff from a Physics stand point. engineers on the other hand want to solve the problem without understanding it.

The best books I have ever come across to deal with this topic are:

INTRODUCTION TO ELECTROMAGNETIC ENGINEERING

-and-

TIME HARMONIC ELECTROMAGNETIC FIELDS

by R.F. Harrington

These books are currently in re-print and you can find them on Amazon.

Harrington is not for the average learner.
Concepts are quite difficult to grasp. it is more of a graduate text.