Does anyone know what stitch this is please?

Hi, my grandmother passed away before she could finish making this blanket, so to honor her, we’re going to try to finish it ourselves. We just don’t know if it’s crochet or knitted (we think knitted), but don’t know what stitch it is. Do you know what it is? How can we find out how to do it ourselves? Make the squares to finish the blanket?
https://drive.google.com/file/d/0B877FJE4SjMNS2NQR2hpX3ZqVlk/view?usp=sharing

Many thanks

It is crochet, looks like a doubled crochet stitch to me.

I agree. It looks like double crochet. The hardest part should be matching the gauge.

Thank you for your responses, I looked these stitches up on youtube and they are exactly right! Now I’m able to start the squares!Perfect!!! Thanks so much