Are you studying and working in the area of developmental biology of animals? Then maybe this book is ok for you. Are you an undergraduate student in a Biology department that just wants to be introduced to the essentials of Developmental Biology? Then this book maybe is not for you!I've got this book in order to be introduced in what we describe as developmental biology. My previous knowledge was mostly (but not least) on the areas of Cellular Biology, Molecular Biology, Biochemistry, Genetics, Microbiology, Chemistry, Botany, Human Physiology and other scientific areas that an undergraduate student is being exposed to. There was a subject about Essentials of Developmental Biology in my Biology Department. BUT: This book was so hard to give me an introductive knowledge on the subject.1.There's not a reasonable flux in what you read. (You start reading the first chapters, don't understand many things and you finally find out something about them in the final chapters.)2.The pictures are very few. (You read the text, wondering how all these things that are described on the text would look like but there not a pic for lots of them! The only help is your imagination.)3.TOTAL lack of 3d-pictures. (I think it's impossible to discuss about cells that start from a zygote and finishing into an organism without having 3d-pictures! All the pictures are totally flat.)In an nutshell. Maybe this book is not intented to be an introduction to Developmental Biology. Maybe it's a good book for somebody that has already knoweledge on this particular subject. But I think that it's not suited for an undergraduate Biology student that wants to be introduced to the subject.